comp.lang.idl-pvwave archive: archive » GPULib 1.0.6: GPU arrays getting zeroed once again

Home » Public Forums » archive » GPULib 1.0.6: GPU arrays getting zeroed once again

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

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

Senior Member

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

Report message to a moderator

[Message index]

		GPULib 1.0.6: GPU arrays getting zeroed once again By: Mort Canty on Sun, 21 December 2008 13:10
		Re: GPULib 1.0.6: GPU arrays getting zeroed once again By: Mort Canty on Sun, 21 December 2008 13:13

Previous Topic:	Problem reading data from stdin using EOF(0) in version 6.0 and 7.0
Next Topic:	Re: WIDGET_TABLE: How to set first column width?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Mon Dec 01 15:30:33 PST 2025

Total time taken to generate the page: 0.39871 seconds