| GPULib 1.0.6: GPU arrays getting zeroed once again [message #64412] |
Sun, 21 December 2008 13:10  |
Mort Canty
Messages: 134
Registered: March 2003
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Senior Member |
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Well, things were going OK with my program GPUKPCA_RUN under 1.0.6 until
I tried to use my own function (gpukernel_matrix) to centralize some of
the operations:
while i lt num_rows do begin
gpuView,GG_gpu,i*num_cols*num_bands,num_bands*num_cols,GGi_g pu
gpuReform,GGi_gpu,num_bands,num_cols
KK_gpu = gpukernel_matrix(G_gpu,GGi_gpu,gma=gma)
gpuView,image_gpu,i*num_cols*num_pcs,num_cols*num_pcs,row_gp u
gpuReform,row_gpu,num_cols,num_pcs
row_gpu = gpuMatrix_multiply(KK_gpu,alpha1_gpu,lhs=row_gpu)
gpufree,KK_gpu
print,i,max(gpugetarr(image_gpu))
i++
endwhile
As was happening before, gpu_image gets zeroed part way through. I
noticed that, just as this occurs, the display flashes as if there was
some kind of hardware reset. Here is part of the printout from the above
loop:
37 0.749977
38 0.749977
39 0.749977
40 0.749977
41 0.749977
42 0.749977
43 0.749977
44 0.749977
45 0.749977 <=== display flashes
46 0.000000
47 0.000000
48 0.000000
49 0.000000
Don't know if that behavior is a clue, but I thought it worth mentioning.
- Mort
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| Re: GPULib 1.0.6: GPU arrays getting zeroed once again [message #64413 is a reply to message #64412] |
Sun, 21 December 2008 13:13  |
Mort Canty
Messages: 134
Registered: March 2003
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Senior Member |
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Mort Canty schrieb:
> Well, things were going OK with my program GPUKPCA_RUN under 1.0.6 until
> I tried to use my own function (gpukernel_matrix) to centralize some of
> the operations:
>
>
Sorry, I wanted to post this to the gpulib newslist. Hit the wrong damn
button.
Mort
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