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GPULIB troubleshoot [message #80568] Mon, 25 June 2012 01:27
lecacheux.alain is currently offline  lecacheux.alain
Messages: 325
Registered: January 2008
Senior Member
This message is intended to afficionados of GPULIB (in particular
Michael Galloy...)

I was successfully using a Tesla C1060 over several monthes on some
workstation running Windows XP 64 bits and IDL8.0. Very successfully.

Recently, I upgraded the same machine to Windows 7 64 bits and IDL8.2,
with the following unsatisfying result:

IDL> print,!version
{ x86_64 Win32 Windows Microsoft Windows 8.2 Apr 10 2012 64
64}

IDL> gpuinit,0, /HARDWARE, ERROR=err, /VERBOSE
Welcome to GPULib 1.4.4 (Revision: 2107)
% GPUINIT: using hardware
Graphics card: Tesla C1060, compute capability: 1.3, memory: 4040 MB
available, 4095 MB total
Checking GPU memory allocation...no errors

IDL> a = gpuputarr(findgen(10), ERROR=err) & print,err
0
IDL> b = gpuputarr(findgen(10), ERROR=err) & print,err
0
IDL> c = gpumult(a,b,LHS=c, ERROR=err) & print,err
8
The c GPU variable is created, but is in error

IDL> print, gpugetarr(c,ERROR=err) & print,err
1.43493e-042 1.73472e-018 0.000000 7.34684e-040 0.000000
0.000000 0.000000 6.01853e-036 0.000000 2.52435e-029
0

Does someone have an explanation ?
alain.
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