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  • Volume Shadow Copy based backup that works with TrueCrypt?

    - by jasonh
    I have enabled whole-drive encryption on my external drive to comply with my company's requirements about data security. I want to be able to make a backup of files on the drive, even while they're in use. Is there any program out there that uses Volume Shadow Copy for backup and also works with a TrueCrypt encrypted drive? I have tried Windows Backup and Macrium Reflect and both act like the drive isn't connected, even though TrueCrypt has mounted it. It would be really nice if there was something that was free, but in order for that to work, it also has to work for commercial purposes since this is my company laptop I'm trying to backup.

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  • Depth Map resolution shifting

    - by user3669538
    the problem is with shadow mapping as you can see, actually it works fine but in a certain condition that the Depth Map size must be equal to the size of rendering buffer, I use an infinite directional light so if the window is 800x600 the depth map must be 800x600, and when i change the size of the shadow map to be 900x600 it starts to be shifted and when it's size be 1024x1024 it also shifts till it disappears the GLSL shadow function float calcShadow(sampler2D Dmap, vec4 coor){ vec4 sh = vec4((coor.xyz/coor.w),1); sh.z *= 0.9; return step(sh.z,texture2D(Dmap,sh.xy).r); } here's the result when it's the same size as the window Colored result & Depth Map and here's the shifted result, as you can notice the depth map is exactly as the previous one with the addition of white space to the right. Colored result http://goo.gl/5lYIFV Depth Map http://goo.gl/7320Dd

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  • Shadows shimmer when camera moves

    - by Chad Layton
    I've implemented shadow maps in my simple block engine as an exercise. I'm using one directional light and using the view volume to create the shadow matrices. I'm experiencing some problems with the shadows shimmering when the camera moves and I'd like to know if it's an issue with my implementation or just an issue with basic/naive shadow mapping itself. Here's a video: http://www.youtube.com/watch?v=vyprATt5BBg&feature=youtu.be Here's the code I use to create the shadow matrices. The commented out code is my original attempt to perfectly fit the view frustum. You can also see my attempt to try clamping movement to texels in the shadow map which didn't seem to make any difference. Then I tried using a bounding sphere instead, also to no apparent effect. public void CreateViewProjectionTransformsToFit(Camera camera, out Matrix viewTransform, out Matrix projectionTransform, out Vector3 position) { BoundingSphere cameraViewFrustumBoundingSphere = BoundingSphere.CreateFromFrustum(camera.ViewFrustum); float lightNearPlaneDistance = 1.0f; Vector3 lookAt = cameraViewFrustumBoundingSphere.Center; float distanceFromLookAt = cameraViewFrustumBoundingSphere.Radius + lightNearPlaneDistance; Vector3 directionFromLookAt = -Direction * distanceFromLookAt; position = lookAt + directionFromLookAt; viewTransform = Matrix.CreateLookAt(position, lookAt, Vector3.Up); float lightFarPlaneDistance = distanceFromLookAt + cameraViewFrustumBoundingSphere.Radius; float diameter = cameraViewFrustumBoundingSphere.Radius * 2.0f; Matrix.CreateOrthographic(diameter, diameter, lightNearPlaneDistance, lightFarPlaneDistance, out projectionTransform); //Vector3 cameraViewFrustumCentroid = camera.ViewFrustum.GetCentroid(); //position = cameraViewFrustumCentroid - (Direction * (camera.FarPlaneDistance - camera.NearPlaneDistance)); //viewTransform = Matrix.CreateLookAt(position, cameraViewFrustumCentroid, Up); //Vector3[] cameraViewFrustumCornersWS = camera.ViewFrustum.GetCorners(); //Vector3[] cameraViewFrustumCornersLS = new Vector3[8]; //Vector3.Transform(cameraViewFrustumCornersWS, ref viewTransform, cameraViewFrustumCornersLS); //Vector3 min = cameraViewFrustumCornersLS[0]; //Vector3 max = cameraViewFrustumCornersLS[0]; //for (int i = 1; i < 8; i++) //{ // min = Vector3.Min(min, cameraViewFrustumCornersLS[i]); // max = Vector3.Max(max, cameraViewFrustumCornersLS[i]); //} //// Clamp to nearest texel //float texelSize = 1.0f / Renderer.ShadowMapSize; //min.X -= min.X % texelSize; //min.Y -= min.Y % texelSize; //min.Z -= min.Z % texelSize; //max.X -= max.X % texelSize; //max.Y -= max.Y % texelSize; //max.Z -= max.Z % texelSize; //// We just use an orthographic projection matrix. The sun is so far away that it's rays are essentially parallel. //Matrix.CreateOrthographicOffCenter(min.X, max.X, min.Y, max.Y, -max.Z, -min.Z, out projectionTransform); } And here's the relevant part of the shader: if (CastShadows) { float4 positionLightCS = mul(float4(position, 1.0f), LightViewProj); float2 texCoord = clipSpaceToScreen(positionLightCS) + 0.5f / ShadowMapSize; float shadowMapDepth = tex2D(ShadowMapSampler, texCoord).r; float distanceToLight = length(LightPosition - position); float bias = 0.2f; if (shadowMapDepth < (distanceToLight - bias)) { return float4(0.0f, 0.0f, 0.0f, 0.0f); } } The shimmer is slightly better if I drastically reduce the view volume but I think that's mostly just because the texels become smaller and it's harder to notice them flickering back and forth. I'd appreciate any insight, I'd very much like to understand what's going on before I try other techniques.

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  • planar shadow matrix and plane b value

    - by DevExcite
    I implemented planar shadows with the function D3DXMatrixShadow. As you know, we need plane and light factor to calculate a shadow matrix. The problem is that when I set the plane as D3DXPLANE p(0, -1, 0, 0.1f), the shadows by directional light are correctly rendered, but the shadows by point light are not rendered. However, if I use D3DXPLANE p(0, 1, 0, 0.1f), the situation is reversed, shadows by directional light are not drawn, the shadows by point light are ok. I cannot understand why it happens. Is it normal or am i missing something? Please explain to me why this happens. Thanks in advance.

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  • Conky dropping shadow when invoked at startup

    - by boywithaxe
    I read this thread but it doesn't really address my issue. The problem that I have is that whenever I log in, conky starts up, as set up in Startup Applications, but the instance it runs is dropping shadow and is above every other window, showing the wallpaper beneath it. This can be easily fixed by relaunching conky, but that defeats the purpose of having it start up at login. Also, running conky at any point manually after logging does not cause this. Any suggestions? I rewrote the script and played about with Compiz, but it still keeps happening.

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  • forward rendering and multiple shadow maps

    - by Irbis
    I have two light sources on my scene. I created two fbo's which store depth textures for these lights. A render loop looks like this: bind fbo1 save depth values for first light unbind fbo1 bind fbo2 save depth values for second light unbind fbo2 enable additive blending bind first depth texture render scene bind second depth texture render scene disable additive blending For one light source the program works fine. For many light sources I use an additive blending to acumulate lighting results but then some objects become transparent (for example when an object which is further away from the camera is drawn before an object which is closer to the camera). How to resolve that problem ? How should I accumulate lighting effects for many light sources (many shadow maps) ? P.S. I use OpenGL/GLSL 3.3+

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  • Large scale perspective lights casting shadow maps, in the most optimized way?

    - by meds
    I'm using projected texture shadows coupled with lights to light a large sports field at night. To do this I'm using shadow cameras which I place in the position of the stadiums lights and shine it down on the field at the appropriate angle. The problem with this method is the textures to which I render the shadows into have to be very large so they can keep sufficient detail over the entire stadium. This is incredibly under optimized since at any given point the players attention is only directed on a small portion of the field meaning large chunks of the texture just take up space wit no benefits. However the issue is the lights need to be perspective based as they come from actual directional lights hovering over the stadium. The way to solve this, I believe, is to figure out in the shadow cameras view matrix it would be to place the actual camera to render from, and adjust the view matrix accordingly to the position it is. So my question is, how can I calculate the optimal position to put the shadow camera and calculate its view matrix such that the shadows it projects will appear to be coming from the light source rather than the camera?

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  • Compute directional light frustum from view furstum points and light direction

    - by Fabian
    I'm working on a friends engine project and my task is to construct a new frustum from the light direction that overlaps the view frustum and possible shadow casters. The project already has a function that creates a frustum for this but its way to big and includes way to many casters (shadows) which can't be seen in the view frustum. Now the only parameter of this function are the normalized light direction vector and a view class which lets me extract the 8 view frustum points in world space. I don't have any additional infos about the scene. I have read some of the related Questions here but non seem to fit very well to my problem as they often just point to cascaded shadow maps. Sadly i can't use DX or openGl functions directly because this engine has a dedicated math library. From what i've read so far the steps are: Transform view frustum points into light space and find min/max x and y values (or sometimes minima and maxima of all three axis) and create a AABB using the min/max vectors. But what comes after this step? How do i transform this new AABB back to world space? What i've done so far: CVector3 Points[8], MinLight = CVector3(FLT_MAX), MaxLight = CVector3(FLT_MAX); for(int i = 0; i<8;++i){ Points[i] = Points[i] * WorldToShadowMapMatrix; MinLight = Math::Min(Points[i],MinLight); MaxLight = Math::Max(Points[i],MaxLight); } AABox box(MinLight,MaxLight); I don't think this is the right way to do it. The near plain probably has to extend into the direction of the light source to include potentional shadow casters. I've read the Microsoft article about cascaded shadow maps http://msdn.microsoft.com/en-us/library/windows/desktop/ee416307%28v=vs.85%29.aspx which also includes some sample code. But they seem to use the scenes AABB to determine the near and far plane which I can't since i cant access this information from the funtion I'm working in. Could you guys please link some example code which shows the calculation of such frustum? Thanks in advance! Additional questio: is there a way to construct a WorldToFrustum matrix that represents the above transformation?

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  • How to manually patch Blogger template to use Disqus

    - by user317944
    I'm trying to add disqus to my blog and I tried following this guide to do so: http://disqus.com/docs/patch-blogger/ However their instructions are completely off with what I have on my custom template. Here is the template: <b:skin><![CDATA[/*----------------------------------------------- Blogger Template Style Name: Picture Window Designer: Josh Peterson URL: www.noaesthetic.com ----------------------------------------------- */ /* Variable definitions ==================== */ /* Content ----------------------------------------------- */ body { font: $(body.font); color: $(body.text.color); } html body .region-inner { min-width: 0; max-width: 100%; width: auto; } .content-outer { font-size: 90%; } a:link { text-decoration:none; color: $(link.color); } a:visited { text-decoration:none; color: $(link.visited.color); } a:hover { text-decoration:underline; color: $(link.hover.color); } .body-fauxcolumn-outer { background: $(body.background); } .content-outer { background: $(content.background); -moz-border-radius: $(content.border.radius); -webkit-border-radius: $(content.border.radius); -goog-ms-border-radius: $(content.border.radius); border-radius: $(content.border.radius); -moz-box-shadow: 0 0 $(content.shadow.spread) rgba(0, 0, 0, .15); -webkit-box-shadow: 0 0 $(content.shadow.spread) rgba(0, 0, 0, .15); -goog-ms-box-shadow: 0 0 $(content.shadow.spread) rgba(0, 0, 0, .15); box-shadow: 0 0 $(content.shadow.spread) rgba(0, 0, 0, .15); margin: $(content.margin) auto; } .content-inner { padding: $(content.padding); } /* Header ----------------------------------------------- */ .header-outer { background: $(header.background.color) $(header.background.gradient) repeat-x scroll top left; _background-image: none; color: $(header.text.color); -moz-border-radius: $(header.border.radius); -webkit-border-radius: $(header.border.radius); -goog-ms-border-radius: $(header.border.radius); border-radius: $(header.border.radius); } .Header img, .Header #header-inner { -moz-border-radius: $(header.border.radius); -webkit-border-radius: $(header.border.radius); -goog-ms-border-radius: $(header.border.radius); border-radius: $(header.border.radius); } .header-inner .Header .titlewrapper, .header-inner .Header .descriptionwrapper { padding-left: $(header.padding); padding-right: $(header.padding); } .Header h1 { font: $(header.font); text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3); } .Header h1 a { color: $(header.text.color); } .Header .description { font-size: 130%; } /* Tabs ----------------------------------------------- */ .tabs-inner { margin: .5em $(tabs.margin.sides) $(tabs.margin.bottom); padding: 0; } .tabs-inner .section { margin: 0; } .tabs-inner .widget ul { padding: 0; background: $(tabs.background.color) $(tabs.background.gradient) repeat scroll bottom; -moz-border-radius: $(tabs.border.radius); -webkit-border-radius: $(tabs.border.radius); -goog-ms-border-radius: $(tabs.border.radius); border-radius: $(tabs.border.radius); } .tabs-inner .widget li { border: none; } .tabs-inner .widget li a { display: block; padding: .5em 1em; margin-$endSide: $(tabs.spacing); color: $(tabs.text.color); font: $(tabs.font); -moz-border-radius: $(tab.border.radius) $(tab.border.radius) 0 0; -webkit-border-top-left-radius: $(tab.border.radius); -webkit-border-top-right-radius: $(tab.border.radius); -goog-ms-border-radius: $(tab.border.radius) $(tab.border.radius) 0 0; border-radius: $(tab.border.radius) $(tab.border.radius) 0 0; background: $(tab.background); border-$endSide: 1px solid $(tabs.separator.color); } .tabs-inner .widget li:first-child a { padding-$startSide: 1.25em; -moz-border-radius-top$startSide: $(tab.first.border.radius); -moz-border-radius-bottom$startSide: $(tabs.border.radius); -webkit-border-top-$startSide-radius: $(tab.first.border.radius); -webkit-border-bottom-$startSide-radius: $(tabs.border.radius); -goog-ms-border-top-$startSide-radius: $(tab.first.border.radius); -goog-ms-border-bottom-$startSide-radius: $(tabs.border.radius); border-top-$startSide-radius: $(tab.first.border.radius); border-bottom-$startSide-radius: $(tabs.border.radius); } .tabs-inner .widget li.selected a, .tabs-inner .widget li a:hover { position: relative; z-index: 1; background: $(tabs.selected.background.color) $(tab.selected.background.gradient) repeat scroll bottom; color: $(tabs.selected.text.color); -moz-box-shadow: 0 0 $(region.shadow.spread) rgba(0, 0, 0, .15); -webkit-box-shadow: 0 0 $(region.shadow.spread) rgba(0, 0, 0, .15); -goog-ms-box-shadow: 0 0 $(region.shadow.spread) rgba(0, 0, 0, .15); box-shadow: 0 0 $(region.shadow.spread) rgba(0, 0, 0, .15); } /* Headings ----------------------------------------------- */ h2 { font: $(widget.title.font); text-transform: $(widget.title.text.transform); color: $(widget.title.text.color); margin: .5em 0; } /* Main ----------------------------------------------- */ .main-outer { background: $(main.background); -moz-border-radius: $(main.border.radius.top) $(main.border.radius.top) 0 0; -webkit-border-top-left-radius: $(main.border.radius.top); -webkit-border-top-right-radius: $(main.border.radius.top); -webkit-border-bottom-left-radius: 0; -webkit-border-bottom-right-radius: 0; -goog-ms-border-radius: $(main.border.radius.top) $(main.border.radius.top) 0 0; border-radius: $(main.border.radius.top) $(main.border.radius.top) 0 0; -moz-box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); -webkit-box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); -goog-ms-box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); } .main-inner { padding: 15px $(main.padding.sides) 20px; } .main-inner .column-center-inner { padding: 0 0; } .main-inner .column-left-inner { padding-left: 0; } .main-inner .column-right-inner { padding-right: 0; } /* Posts ----------------------------------------------- */ h3.post-title { margin: 0; font: $(post.title.font); } .comments h4 { margin: 1em 0 0; font: $(post.title.font); } .post-outer { background-color: $(post.background.color); border: solid 1px $(post.border.color); -moz-border-radius: $(post.border.radius); -webkit-border-radius: $(post.border.radius); border-radius: $(post.border.radius); -goog-ms-border-radius: $(post.border.radius); padding: 15px 20px; margin: 0 $(post.margin.sides) 20px; } .post-body { line-height: 1.4; font-size: 110%; } .post-header { margin: 0 0 1.5em; color: $(post.footer.text.color); line-height: 1.6; } .post-footer { margin: .5em 0 0; color: $(post.footer.text.color); line-height: 1.6; } blog-pager { font-size: 140% } comments .comment-author { padding-top: 1.5em; border-top: dashed 1px #ccc; border-top: dashed 1px rgba(128, 128, 128, .5); background-position: 0 1.5em; } comments .comment-author:first-child { padding-top: 0; border-top: none; } .avatar-image-container { margin: .2em 0 0; } /* Widgets ----------------------------------------------- */ .widget ul, .widget #ArchiveList ul.flat { padding: 0; list-style: none; } .widget ul li, .widget #ArchiveList ul.flat li { border-top: dashed 1px #ccc; border-top: dashed 1px rgba(128, 128, 128, .5); } .widget ul li:first-child, .widget #ArchiveList ul.flat li:first-child { border-top: none; } .widget .post-body ul { list-style: disc; } .widget .post-body ul li { border: none; } /* Footer ----------------------------------------------- */ .footer-outer { color:$(footer.text.color); background: $(footer.background); -moz-border-radius: $(footer.border.radius.top) $(footer.border.radius.top) $(footer.border.radius.bottom) $(footer.border.radius.bottom); -webkit-border-top-left-radius: $(footer.border.radius.top); -webkit-border-top-right-radius: $(footer.border.radius.top); -webkit-border-bottom-left-radius: $(footer.border.radius.bottom); -webkit-border-bottom-right-radius: $(footer.border.radius.bottom); -goog-ms-border-radius: $(footer.border.radius.top) $(footer.border.radius.top) $(footer.border.radius.bottom) $(footer.border.radius.bottom); border-radius: $(footer.border.radius.top) $(footer.border.radius.top) $(footer.border.radius.bottom) $(footer.border.radius.bottom); -moz-box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); -webkit-box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); -goog-ms-box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); box-shadow: 0 $(region.shadow.offset) $(region.shadow.spread) rgba(0, 0, 0, .15); } .footer-inner { padding: 10px $(main.padding.sides) 20px; } .footer-outer a { color: $(footer.link.color); } .footer-outer a:visited { color: $(footer.link.visited.color); } .footer-outer a:hover { color: $(footer.link.hover.color); } .footer-outer .widget h2 { color: $(footer.widget.title.text.color); } ]] <b:template-skin> <b:variable default='930px' name='content.width' type='length' value='930px'/> <b:variable default='0' name='main.column.left.width' type='length' value='180px'/> <b:variable default='360px' name='main.column.right.width' type='length' value='180px'/> <![CDATA[ body { min-width: $(content.width); } .content-outer, .region-inner { min-width: $(content.width); max-width: $(content.width); _width: $(content.width); } .main-inner .columns { padding-left: $(main.column.left.width); padding-right: $(main.column.right.width); } .main-inner .fauxcolumn-center-outer { left: $(main.column.left.width); right: $(main.column.right.width); /* IE6 does not respect left and right together */ _width: expression(this.parentNode.offsetWidth - parseInt("$(main.column.left.width)") - parseInt("$(main.column.right.width)") + 'px'); } .main-inner .fauxcolumn-left-outer { width: $(main.column.left.width); } .main-inner .fauxcolumn-right-outer { width: $(main.column.right.width); } .main-inner .column-left-outer { width: $(main.column.left.width); right: $(main.column.left.width); margin-right: -$(main.column.left.width); } .main-inner .column-right-outer { width: $(main.column.right.width); margin-right: -$(main.column.right.width); } #layout { min-width: 0; } #layout .content-outer { min-width: 0; width: 800px; } #layout .region-inner { min-width: 0; width: auto; } ]]> </b:template-skin> <div class='main-cap-bottom cap-bottom'> <div class='cap-left'/> <div class='cap-right'/> </div> </div> <footer> <div class='footer-outer'> <div class='footer-cap-top cap-top'> <div class='cap-left'/> <div class='cap-right'/> </div> <div class='fauxborder-left footer-fauxborder-left'> <div class='fauxborder-right footer-fauxborder-right'/> <div class='region-inner footer-inner'> <macro:include id='footer-sections' name='sections'> <macro:param default='2' name='num' value='3'/> <macro:param default='footer' name='idPrefix'/> <macro:param default='foot' name='class'/> <macro:param default='false' name='includeBottom'/> </macro:include> <!-- outside of the include in order to lock Attribution widget --> <b:section class='foot' id='footer-3' showaddelement='no'> document.body.className = document.body.className.replace('loading', ''); <macro:if cond='data:col.num &gt;= 2'> <table border='0' cellpadding='0' cellspacing='0' mexpr:class='&quot;section-columns columns-&quot; + data:col.num'> <tbody> <tr> <td class='first columns-cell'> <b:section mexpr:class='data:col.class' mexpr:id='data:col.idPrefix + &quot;-2-1&quot;'/> </td> <td class='columns-cell'> <b:section mexpr:class='data:col.class' mexpr:id='data:col.idPrefix + &quot;-2-2&quot;'/> </td> <macro:if cond='data:col.num &gt;= 3'> <td class='columns-cell'> <b:section mexpr:class='data:col.class' mexpr:id='data:col.idPrefix + &quot;-2-3&quot;'/> </td> </macro:if> <macro:if cond='data:col.num &gt;= 4'> <td class='columns-cell'> <b:section mexpr:class='data:col.class' mexpr:id='data:col.idPrefix + &quot;-2-4&quot;'/> </td> </macro:if> </tr> </tbody> </table> <macro:if cond='data:col.includeBottom'> <b:section mexpr:class='data:col.class' mexpr:id='data:col.idPrefix + &quot;-3&quot;' showaddelement='no'/> </macro:if> </macro

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  • What does %st mean in top?

    - by Ben
    Here is an example from my top: Cpu(s): 6.0%us, 3.0%sy, 0.0%ni, 78.7%id, 0.0%wa, 0.0%hi, 0.3%si, 12.0%st I am trying to figure out the significance of the %st field. I read that it means steal cpu and it represents time spent by the hypervisor, but I want to know what that actually means to me. Does it mean I may be on a busy physical server and someone else is using too much CPU on the server and they are taking from my VM? If I am using EBS could it be related to handling EBS I/O at the hypervisor level? Is it related to things running on my VM or is it completely unaffected by me?

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  • Black or White Border/Shadow around PNGs in SDL/OPENGL

    - by Dylan
    having the same issue as this: Why do my sprites have a dark shadow/line/frame surrounding the texture? however, when I do the fix suggested there (changing GL_SRC_ALPHA to GL_ONE) it just replaces the black border with a white border on the images, and messes with my background color and some polygons I'm drawing (not all of them weirdly) by making them much lighter... any ideas? heres some of my relevant code. init: glMatrixMode(GL_PROJECTION); glLoadIdentity(); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glEnable(GL_DEPTH_TEST); glEnable(GL_MULTISAMPLE); glEnable(GL_TEXTURE_2D); glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); glAlphaFunc(GL_GREATER, 0.01); glEnable(GL_ALPHA_TEST); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glEnable(GL_BLEND); when each texture is loaded: glGenTextures(1, &textureID); glBindTexture(GL_TEXTURE_2D, textureID); gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, surface->w, surface->h, GL_BGRA, GL_UNSIGNED_BYTE, surface->pixels); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

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  • Why are my Opteron cores running at only 75% capacity each? (25% CPU idle)

    - by Tim Cooper
    We've just taken delivery of a powerful 32-core AMD Opteron server with 128Gb. We have 2 x 6272 CPU's with 16 cores each. We are running a big long-running java task on 30 threads. We have the NUMA optimisations for Linux and java turned on. Our Java threads are mainly using objects that are private to that thread, sometimes reading memory that other threads will be reading, and very very occasionally writing or locking shared objects. We can't explain why the CPU cores are 25% idle. Below is a dump of "top": top - 23:06:38 up 1 day, 23 min, 3 users, load average: 10.84, 10.27, 9.62 Tasks: 676 total, 1 running, 675 sleeping, 0 stopped, 0 zombie Cpu(s): 64.5%us, 1.3%sy, 0.0%ni, 32.9%id, 1.3%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 132138168k total, 131652664k used, 485504k free, 92340k buffers Swap: 5701624k total, 230252k used, 5471372k free, 13444344k cached ... top - 22:37:39 up 23:54, 3 users, load average: 7.83, 8.70, 9.27 Tasks: 678 total, 1 running, 677 sleeping, 0 stopped, 0 zombie Cpu0 : 75.8%us, 2.0%sy, 0.0%ni, 22.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 77.2%us, 1.3%sy, 0.0%ni, 21.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 77.3%us, 1.0%sy, 0.0%ni, 21.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 77.8%us, 1.0%sy, 0.0%ni, 21.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 76.9%us, 2.0%sy, 0.0%ni, 21.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 76.3%us, 2.0%sy, 0.0%ni, 21.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 12.6%us, 3.0%sy, 0.0%ni, 84.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 8.6%us, 2.0%sy, 0.0%ni, 89.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu8 : 77.0%us, 2.0%sy, 0.0%ni, 21.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu9 : 77.0%us, 2.0%sy, 0.0%ni, 21.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu10 : 77.6%us, 1.7%sy, 0.0%ni, 20.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu11 : 75.7%us, 2.0%sy, 0.0%ni, 21.4%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu12 : 76.6%us, 2.3%sy, 0.0%ni, 21.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu13 : 76.6%us, 2.3%sy, 0.0%ni, 21.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu14 : 76.2%us, 2.6%sy, 0.0%ni, 15.9%id, 5.3%wa, 0.0%hi, 0.0%si, 0.0%st Cpu15 : 76.6%us, 2.0%sy, 0.0%ni, 21.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu16 : 73.6%us, 2.6%sy, 0.0%ni, 23.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu17 : 74.5%us, 2.3%sy, 0.0%ni, 23.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu18 : 73.9%us, 2.3%sy, 0.0%ni, 23.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu19 : 72.9%us, 2.6%sy, 0.0%ni, 24.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu20 : 72.8%us, 2.6%sy, 0.0%ni, 24.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu21 : 72.7%us, 2.3%sy, 0.0%ni, 25.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu22 : 72.5%us, 2.6%sy, 0.0%ni, 24.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu23 : 73.0%us, 2.3%sy, 0.0%ni, 24.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu24 : 74.7%us, 2.7%sy, 0.0%ni, 22.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu25 : 74.5%us, 2.6%sy, 0.0%ni, 22.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu26 : 73.7%us, 2.0%sy, 0.0%ni, 24.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu27 : 74.1%us, 2.3%sy, 0.0%ni, 23.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu28 : 74.1%us, 2.3%sy, 0.0%ni, 23.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu29 : 74.0%us, 2.0%sy, 0.0%ni, 24.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu30 : 73.2%us, 2.3%sy, 0.0%ni, 24.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu31 : 73.1%us, 2.0%sy, 0.0%ni, 24.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 132138168k total, 131711704k used, 426464k free, 88336k buffers Swap: 5701624k total, 229572k used, 5472052k free, 13745596k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 13865 root 20 0 122g 112g 3.1g S 2334.3 89.6 20726:49 java 27139 jayen 20 0 15428 1728 952 S 2.6 0.0 0:04.21 top 27161 sysadmin 20 0 15428 1712 940 R 1.0 0.0 0:00.28 top 33 root 20 0 0 0 0 S 0.3 0.0 0:06.24 ksoftirqd/7 131 root 20 0 0 0 0 S 0.3 0.0 0:09.52 events/0 1858 root 20 0 0 0 0 S 0.3 0.0 1:35.14 kondemand/0 A dump of the java stack confirms that none of the threads are anywhere near the few places where locks are used, nor are they anywhere near any disk or network i/o. I had trouble finding a clear explanation of what 'top' means by "idle" versus "wait", but I get the impression that "idle" means "no more threads that need to be run" but this doesn't make sense in our case. We're using a "Executors.newFixedThreadPool(30)". There are a large number of tasks pending and each task lasts for 10 seconds or so. I suspect that the explanation requires a good understanding of NUMA. Is the "idle" state what you see when a CPU is waiting for a non-local access? If not, then what is the explanation?

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  • What is the `shadow` group used for?

    - by Shtééf
    On my Ubuntu 9.10 system, there's a shadow system group. There does not appear to be any user assigned to this group at all. The only files that I can find belonging to this group are /etc/shadow and /etc/gshadow. I'm aware that the purpose of these files is to store the passwords separately, out of reach from regular users who still might want to access passwd for other reasons. But what is the purpose of the shadow group? The reason I'm curious about this, is because I'm thinking about configuring nsswitch.conf to store it elsewhere, and would like to know if anything is actually trying to access the shadow database using shadow group credentials.

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  • Programmatically Setting Text Shadow Properties

    - by Ben Gribaudo
    Hello, PowerPoint has two kinds of shadows--shape and text. Shape shadows may be set by right-clicking on a shape (including a text box), choosing Format Text, then selecting Shadow or using VBA via the Shadow property on each shape: For Each Slide In ActivePresentation.Slides For Each Shape In Slide.Shapes Shape.Shadow.Size = 100 'etc Next Next How do I set text shadow's properties using VBA? In the UI, these may be accessed by right-clicking on text, choosing Format Text Effect, then selecting Shadow. I've done a bit of digging online and have been unable to find where these properties may be accessed via PowerPoint's VBA API. Thank you, Ben

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  • Shadow maps unable to properly project shadows in some situations?

    - by meds
    In the shadow map sample provided by Microsoft I've noticed an issue where shadows are not properly projected when thin geometry is projected at high angles, see here the shadows being projected, notice the poles from the lights are not projected: http://imgur.com/QwOBa.png And in this screenshot we see things from the lights perspective, not ethe poles are clearly visible: http://imgur.com/k2woZ.png So two questions really, is this an actual bug or a limitation with shadow mapping and if it's a bug how can I fix it? The source is directly from the Microsoft DirectX Sample Browser 'ShadowMap' sample from July 2004, the sample browser is the latest August 2009 one.

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  • How to do this Python / MySQL manipulation (match) more efficiently?

    - by NJTechie
    Following is my data : Company Table : ID Company Address City State Zip Phone 1 ABC 123 Oak St Philly PA 17542 7329878901 2 CDE 111 Joe St Newark NJ 08654 3 GHI 211 Foe St Brick NJ 07740 7321178901 4 JAK 777 Wall Ocean NJ 07764 7322278901 5 KLE 87 Ilk St Plains NY 07654 7376578901 6 AB 1 W.House SField PA 87656 7329878901 Branch Office Table : ID Address City State Zip Phone 1 323 Alk St Philly PA 17542 7329832221 1 171 Joe St Newark NJ 08654 3 287 Foe St Brick NJ 07740 7321178901 3 700 Wall Ocean NJ 07764 7322278901 1 89 Blk St Surrey NY 07154 7376222901 File to be Matched (In MySQL): ID Company Address City State Zip Phone 1 ABC 123 Oak St Philly PA 17542 7329878901 2 AB 171 Joe St Newark NJ 08654 3 GHI 211 Foe St Brick NJ 07740 7321178901 4 JAK 777 Wall Ocean NJ 07764 7322278901 5 K 87 Ilk St Plains NY 07654 7376578901 Resulting File : ID Company Address City State Zip Phone appendedID 1 ABC 123 Oak St Philly PA 17542 7329878901 [Original record, field always empty] 1 ABC 171 Joe St Newark NJ 08654 1 [Company Table] 1 ABC 323 Alk St Philly PA 17542 7329832221 1 [Branch Office Table] 1 AB 1 W.House SField PA 87656 7329878901 6 [Partial firm and State, Zip match] 2 CDE 111 Joe St Newark NJ 08654 3 GHI 211 Foe St Brick NJ 07740 7321178901 3 GHI 700 Wall Ocean NJ 07764 7322278901 3 3 GHI 287 Foe St Brick NJ 07740 7321178901 3 4 JAK 777 Wall Ocean NJ 07764 7322278901 5 KLE 87 Ilk St Surrey NY 07654 7376578901 5 KLE 89 Blk St Surrey NY 07154 7376222901 5 Requirement : 1) I have to match each firm on the 'File to be Matched' to that of Company and Branch Office tables (MySQL). 2) If there are multiple exact/partial matches, then the ID from Company, Branch Office table is inserted as a new row in the resulting file. 3) Not all the firms will be matched perfectly, in that case I have to match on partial Company names (like 5/8th of the company name) and any of the address fields and insert them in the resulting file. Please help me out in the most efficient solution for this problem.

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  • jQuery CSS Property Monitoring Plug-in updated

    - by Rick Strahl
    A few weeks back I had talked about the need to watch properties of an object and be able to take action when certain values changed. The need for this arose out of wanting to build generic components that could 'attach' themselves to other objects. One example is a drop shadow - if I add a shadow behavior to an object I want the shadow to be pinned to that object so when that object moves I also want the shadow to move with it, or when the panel is hidden the shadow should hide with it - automatically without having to explicitly hook up monitoring code to the panel. For example, in my shadow plug-in I can now do something like this (where el is the element that has the shadow attached and sh is the shadow): if (!exists) // if shadow was created el.watch("left,top,width,height,display", function() { if (el.is(":visible")) $(this).shadow(opt); // redraw else sh.hide(); }, 100, "_shadowMove"); The code now monitors several properties and if any of them change the provided function is called. So when the target object is moved or hidden or resized the watcher function is called and the shadow can be redrawn or hidden in the case of visibility going away. So if you run any of the following code: $("#box") .shadow() .draggable({ handle: ".blockheader" }); // drag around the box - shadow should follow // hide the box - shadow should disappear with box setTimeout(function() { $("#box").hide(); }, 4000); // show the box - shadow should come back too setTimeout(function() { $("#box").show(); }, 8000); This can be very handy functionality when you're dealing with objects or operations that you need to track generically and there are no native events for them. For example, with a generic shadow object that attaches itself to any another element there's no way that I know of to track whether the object has been moved or hidden either via some UI operation (like dragging) or via code. While some UI operations like jQuery.ui.draggable would allow events to fire when the mouse is moved nothing of the sort exists if you modify locations in code. Even tracking the object in drag mode this is hardly generic behavior - a generic shadow implementation can't know when dragging is hooked up. So the watcher provides an alternative that basically gives an Observer like pattern that notifies you when something you're interested in changes. In the watcher hookup code (in the shadow() plugin) above  a check is made if the object is visible and if it is the shadow is redrawn. Otherwise the shadow is hidden. The first parameter is a list of CSS properties to be monitored followed by the function that is called. The function called receives this as the element that's been changed and receives two parameters: The array of watched objects with their current values, plus an index to the object that caused the change function to fire. How does it work When I wrote it about this last time I started out with a simple timer that would poll for changes at a fixed interval with setInterval(). A few folks commented that there are is a DOM API - DOMAttrmodified in Mozilla and propertychange in IE that allow notification whenever any property changes which is much more efficient and smooth than the setInterval approach I used previously. On browser that support these events (FireFox and IE basically - WebKit has the DOMAttrModified event but it doesn't appear to work) the shadow effect is instant - no 'drag behind' of the shadow. Running on a browser that doesn't support still uses setInterval() and the shadow movement is slightly delayed which looks sloppy. There are a few additional changes to this code - it also supports monitoring multiple CSS properties now so a single object can monitor a host of CSS properties rather than one object per property which is easier to work with. For display purposes position, bounds and visibility will be common properties that are to be watched. Here's what the new version looks like: $.fn.watch = function (props, func, interval, id) { /// <summary> /// Allows you to monitor changes in a specific /// CSS property of an element by polling the value. /// when the value changes a function is called. /// The function called is called in the context /// of the selected element (ie. this) /// </summary> /// <param name="prop" type="String">CSS Properties to watch sep. by commas</param> /// <param name="func" type="Function"> /// Function called when the value has changed. /// </param> /// <param name="interval" type="Number"> /// Optional interval for browsers that don't support DOMAttrModified or propertychange events. /// Determines the interval used for setInterval calls. /// </param> /// <param name="id" type="String">A unique ID that identifies this watch instance on this element</param> /// <returns type="jQuery" /> if (!interval) interval = 200; if (!id) id = "_watcher"; return this.each(function () { var _t = this; var el$ = $(this); var fnc = function () { __watcher.call(_t, id) }; var itId = null; var data = { id: id, props: props.split(","), func: func, vals: [props.split(",").length], fnc: fnc, origProps: props, interval: interval }; $.each(data.props, function (i) { data.vals[i] = el$.css(data.props[i]); }); el$.data(id, data); hookChange(el$, id, data.fnc); }); function hookChange(el$, id, fnc) { el$.each(function () { var el = $(this); if (typeof (el.get(0).onpropertychange) == "object") el.bind("propertychange." + id, fnc); else if ($.browser.mozilla) el.bind("DOMAttrModified." + id, fnc); else itId = setInterval(fnc, interval); }); } function __watcher(id) { var el$ = $(this); var w = el$.data(id); if (!w) return; var _t = this; if (!w.func) return; // must unbind or else unwanted recursion may occur el$.unwatch(id); var changed = false; var i = 0; for (i; i < w.props.length; i++) { var newVal = el$.css(w.props[i]); if (w.vals[i] != newVal) { w.vals[i] = newVal; changed = true; break; } } if (changed) w.func.call(_t, w, i); // rebind event hookChange(el$, id, w.fnc); } } $.fn.unwatch = function (id) { this.each(function () { var el = $(this); var fnc = el.data(id).fnc; try { if (typeof (this.onpropertychange) == "object") el.unbind("propertychange." + id, fnc); else if ($.browser.mozilla) el.unbind("DOMAttrModified." + id, fnc); else clearInterval(id); } // ignore if element was already unbound catch (e) { } }); return this; } There are basically two jQuery functions - watch and unwatch. jQuery.fn.watch(props,func,interval,id) Starts watching an element for changes in the properties specified. props The CSS properties that are to be watched for changes. If any of the specified properties changes the function specified in the second parameter is fired. func (watchData,index) The function fired in response to a changed property. Receives this as the element changed and object that represents the watched properties and their respective values. The first parameter is passed in this structure:    { id: itId, props: [], func: func, vals: [] }; A second parameter is the index of the changed property so data.props[i] or data.vals[i] gets the property value that has changed. interval The interval for setInterval() for those browsers that don't support property watching in the DOM. In milliseconds. id An optional id that identifies this watcher. Required only if multiple watchers might be hooked up to the same element. The default is _watcher if not specified. jQuery.fn.unwatch(id) Unhooks watching of the element by disconnecting the event handlers. id Optional watcher id that was specified in the call to watch. This value can be omitted to use the default value of _watcher. You can also grab the latest version of the  code for this plug-in as well as the shadow in the full library at: http://www.west-wind.com:8080/svn/jquery/trunk/jQueryControls/Resources/ww.jquery.js watcher has no other dependencies although it lives in this larger library. The shadow plug-in depends on watcher.© Rick Strahl, West Wind Technologies, 2005-2011

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  • Storage server 2003 shadow copy backups deleted

    - by Aceth
    Hi there We have a 1TB storage server I've just gone to transfer a 100Gb file across to it. And it has deleted the shadow copy. From Googling I understand that this probably occurred: http://support.microsoft.com/kb/826936 Is there any way of recovering those shadow copies back? Thank you very much for having a read anyhow and any help would be greatly appreciated.

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  • NSNumberFormatter and 'th' 'st' 'nd' 'rd' (ordinal) number endings

    - by jan
    Is there a way to use NSNumberFormatter to get the 'th' 'st' 'nd' 'rd' number endings? EDIT: Looks like it does not exist. Here's what I'm using. +(NSString*)ordinalNumberFormat:(NSInteger)num{ NSString *ending; int ones = num % 10; int tens = floor(num / 10); tens = tens % 10; if(tens == 1){ ending = @"th"; }else { switch (ones) { case 1: ending = @"st"; break; case 2: ending = @"nd"; break; case 3: ending = @"rd"; break; default: ending = @"th"; break; } } return [NSString stringWithFormat:@"%d%@", num, ending]; } Adapted from nickf's answer here http://stackoverflow.com/questions/69262/is-there-an-easy-way-in-net-to-get-st-nd-rd-and-th-endings-for-numbers

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  • DriveImage XML fails with a Windows Volume Shadow Service Error

    - by Ssvarc
    I'm trying to image a SATA laptop hard drive, using DriveImageXML, that is attached to my computer via a USB adapter. I'm running Win7 Ultimate 64 bit. DriveXML is returning: Could not initialize Windows Volume Shadow Service (VSS). ERROR C:\Program Files (x86)\Runtime Software\Drivelmage XML\vss64.exe failed to start. ERROR TIMEOUT Make sure VSSVC.EXE is running in your task manager. Click Help for more information. VSSVC.EXE is running in Task Manager, as is VSS64.exe. Looking at the FAQ on the Runtime webpage this turned up: Please verify in Settings-Control Panel-Administrative Tools-Services that the following services are enabled: MS Software Shadow Copy Provider Volume Shadow Copy Also make sure you are able to stop and start these services. Possible reasons for VSS failures: For VSS to work, at least one volume in your computer must be NTFS. If you use only FAT drives, VSS will not function. The required NTFS volume does not need to be identical with the volume you want to image. You should make sure that VSSVC.EXE is running in your task manager. If the problems persist, registering "oleaut.dll" and "oleaut32.dll" using "regsvr32" might help. Both of those services are running and can be started and stopped without issue. Using "regsvr32" to register ""oleaut32.dll" returns successful, but "oleaut.dll" returns: The module "oleaut.dll" failed to load. Make sure the binary is stored at the specified path or debug it to check for problems with the binary or dependent .DLL files. The specified module could not be found. Some other information that might be relevant. Browsing to the drive is successful, but accessing certain folders returns an "access" error. Windows runs a permissions adder that adds the current user profile to the NFTS permissions. Could this be the cause of the issue? DriveImage XML is running as Administrator. Thoughts?

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  • System State Backups using NTbackup fail with error 0x800423f4 (relating to volume shadow copy)

    - by Paul Zimmerman
    We have a Windows Server 2003 R2 running Service Pack 2. It is a domain controller (Global Catalog) and our main internal DNS server. We run a System State backup of the machine to back up Active Directory information and save the backup to a different server. This server has a single drive (C:), and we do have Shadow Copies enabled for the volume (which are completing successfully). The System State Backup is now failing with the following listed in the backup logs: Volume shadow copy creation: Attempt 1. "Event Log Writer" has reported an error 0x800423f4. This is part of System State. The backup cannot continue. Error returned while creating the volume shadow copy:800423f4 Aborting Backup. The operation did not successfully complete. When doing a vssadmin list writers, we sometimes get the following reported for the Event Log Writer (other times it says that it is in the state of "[1] Stable" with "No error"): Writer name: 'Event Log Writer' Writer Id: {eee8c692-67ed-4250-8d86-390603070d00} Writer Instance Id: {c7194e96-868a-49e5-ba99-89b61977753c} State: [8] Failed Last error: Retryable error We have tried disabling the event log service via the registry, rebooting, deleting the event log files from the drive, then re-enabling the service via the registry and rebooting, but this didn't seem to solve the issue. We also get an error message when in the event viewer when trying to open the log for the "File Replication Service" of "Unable to complete the operation on 'File Replication Service'. The security descriptor structure is invalid." I have searched the error via Google and tried a number of different things, but nothing has seemed to help. Any suggestions on what we might try to get the Event Log Writer to behave would be greatly appreciated!

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  • Drive XML returning Windows Volume Shadow Service Error

    - by Ssvarc
    I'm trying to image a SATA laptop hard drive, using DriveImageXML, that is attached to my computer via a USB adapter. I'm running Win7 Ultimate 64 bit. DriveXML is returning: Could not initialize Windows Volume Shadow Service (VSS). ERROR C:\Program Files (x86)\Runtime Software\Drivelmage XML\vss64.exe failed to start. ERROR TIMEOUT Make sure VSSVC.EXE is running in your task manager. Click Help for more information. VSSVC.EXE is running in Task Manager, as is VSS64.exe. Looking at the FAQ on the Runtime webpage this turned up: Please verify in Settings-Control Panel-Administrative Tools-Services that the following services are enabled: MS Software Shadow Copy Provider Volume Shadow Copy Also make sure you are able to stop and start these services. Possible reasons for VSS failures: For VSS to work, at least one volume in your computer must be NTFS. If you use only FAT drives, VSS will not function. The required NTFS volume does not need to be identical with the volume you want to image. You should make sure that VSSVC.EXE is running in your task manager. If the problems persist, registering "oleaut.dll" and "oleaut32.dll" using "regsvr32" might help. Both of those services are running and can be started and stopped without issue. Using "regsvr32" to register ""oleaut32.dll" returns successful, but "oleaut.dll" returns: The module "oleaut.dll" failed to load. Make sure the binary is stored at the specified path or debug it to check for problems with the binary or dependent .DLL files. The specified module could not be found. Some other information that might be relevant. Browsing to the drive is successful, but accessing certain folders returns an "access" error. Windows runs a permissions adder that adds the current user profile to the NFTS permissions. Could this be the cause of the issue? DriveImage XML is running as Administrator. Thoughts?

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  • Shadow-mapping xna

    - by Kurt Ricci
    I've been trying to implement shadows in my game and I've been following quite a few tutorials online, mainly Riemers, but I'm always getting the same 2 errors when I'm drawing my models and setting the parameters from the effect file. The errors are: This method does not accept null for this parameter. Parameter name: value and Object reference not set to an instance of an object. So I've then downloaded a sample and just replaced my model with the one found in the sample and the same errors occur. I this find very strange as it works with his model. I'm wondering if the problem is with my models (I made them myself). Here's the code where the errors occur (they start to occur after the second foreach loop). Any help would be greatly appreciated, thanks.

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