Skip to main content

system - CUDALink is not initialized


I've upgraded to Mathematica 9.0 on Ubuntu 12.04 with the latest Nvidia driver (304.64). I load CUDA by using, as usual, Needs["CUDALink`"].


CUDAQ[] reports True.

CUDAInformation[] reports:



{1 -> {"Name" -> "GeForce GT 330M", "Clock Rate" -> 1265000, 
"Compute Capabilities" -> 1.2, "GPU Overlap" -> 1,
"Maximum Block Dimensions" -> {512, 512, 64},
"Maximum Grid Dimensions" -> {65535, 65535, 1},
"Maximum Threads Per Block" -> 512,
"Maximum Shared Memory Per Block" -> 16384,
"Total Constant Memory" -> 65536, "Warp Size" -> 32,
"Maximum Pitch" -> 2147483647,

"Maximum Registers Per Block" -> 16384, "Texture Alignment" -> 256,
"Multiprocessor Count" -> 6, "Core Count" -> 48,
"Execution Timeout" -> 1, "Integrated" -> False,
"Can Map Host Memory" -> True, "Compute Mode" -> "Default",
"Texture1D Width" -> 8192, "Texture2D Width" -> 65536,
"Texture2D Height" -> 32768, "Texture3D Width" -> 2048,
"Texture3D Height" -> 2048, "Texture3D Depth" -> 2048,
"Texture2D Array Width" -> 8192, "Texture2D Array Height" -> 8192,
"Texture2D Array Slices" -> 512, "Surface Alignment" -> 256,
"Concurrent Kernels" -> False, "ECC Enabled" -> False,

"TCC Enabled" -> False, "Total Memory" -> 1073414144}}

It seems that everything works. But if try to perform the following:


randM = RandomReal[1, {1000, 1000}];
CUDADot[randM, randM];

I get:



CUDADot::notinit: CUDALink is not initialized.




What does it mean? I already tryied googling looking for the error message... nothing found. Thanks in advice to whom can shed light.




Comments

Popular posts from this blog

front end - keyboard shortcut to invoke Insert new matrix

I frequently need to type in some matrices, and the menu command Insert > Table/Matrix > New... allows matrices with lines drawn between columns and rows, which is very helpful. I would like to make a keyboard shortcut for it, but cannot find the relevant frontend token command (4209405) for it. Since the FullForm[] and InputForm[] of matrices with lines drawn between rows and columns is the same as those without lines, it's hard to do this via 3rd party system-wide text expanders (e.g. autohotkey or atext on mac). How does one assign a keyboard shortcut for the menu item Insert > Table/Matrix > New... , preferably using only mathematica? Thanks! Answer In the MenuSetup.tr (for linux located in the $InstallationDirectory/SystemFiles/FrontEnd/TextResources/X/ directory), I changed the line MenuItem["&New...", "CreateGridBoxDialog"] to read MenuItem["&New...", "CreateGridBoxDialog", MenuKey["m", Modifiers-...

How to thread a list

I have data in format data = {{a1, a2}, {b1, b2}, {c1, c2}, {d1, d2}} Tableform: I want to thread it to : tdata = {{{a1, b1}, {a2, b2}}, {{a1, c1}, {a2, c2}}, {{a1, d1}, {a2, d2}}} Tableform: And I would like to do better then pseudofunction[n_] := Transpose[{data2[[1]], data2[[n]]}]; SetAttributes[pseudofunction, Listable]; Range[2, 4] // pseudofunction Here is my benchmark data, where data3 is normal sample of real data. data3 = Drop[ExcelWorkBook[[Column1 ;; Column4]], None, 1]; data2 = {a #, b #, c #, d #} & /@ Range[1, 10^5]; data = RandomReal[{0, 1}, {10^6, 4}]; Here is my benchmark code kptnw[list_] := Transpose[{Table[First@#, {Length@# - 1}], Rest@#}, {3, 1, 2}] &@list kptnw2[list_] := Transpose[{ConstantArray[First@#, Length@# - 1], Rest@#}, {3, 1, 2}] &@list OleksandrR[list_] := Flatten[Outer[List, List@First[list], Rest[list], 1], {{2}, {1, 4}}] paradox2[list_] := Partition[Riffle[list[[1]], #], 2] & /@ Drop[list, 1] RM[list_] := FoldList[Transpose[{First@li...

mathematical optimization - Minimizing using indices, error: Part::pkspec1: The expression cannot be used as a part specification

I want to use Minimize where the variables to minimize are indices pointing into an array. Here a MWE that hopefully shows what my problem is. vars = u@# & /@ Range[3]; cons = Flatten@ { Table[(u[j] != #) & /@ vars[[j + 1 ;; -1]], {j, 1, 3 - 1}], 1 vec1 = {1, 2, 3}; vec2 = {1, 2, 3}; Minimize[{Total@((vec1[[#]] - vec2[[u[#]]])^2 & /@ Range[1, 3]), cons}, vars, Integers] The error I get: Part::pkspec1: The expression u[1] cannot be used as a part specification. >> Answer Ok, it seems that one can get around Mathematica trying to evaluate vec2[[u[1]]] too early by using the function Indexed[vec2,u[1]] . The working MWE would then look like the following: vars = u@# & /@ Range[3]; cons = Flatten@{ Table[(u[j] != #) & /@ vars[[j + 1 ;; -1]], {j, 1, 3 - 1}], 1 vec1 = {1, 2, 3}; vec2 = {1, 2, 3}; NMinimize[ {Total@((vec1[[#]] - Indexed[vec2, u[#]])^2 & /@ R...