Optimized CUDAs on Windows Seven

[liath555]

new install. driver version 195.62, x64 version. CUDA listed at version 3.

[Josef W. Segur]

What new DLL you refer to? 2.3 or 3.0 ?
From my host:
Total GPU memory 536870912    free GPU memory 492482560
After app init: total GPU memory 536870912    free GPU memory 492482560

     No difference at all.
http://setiathome.berkeley.edu/result.php?resultid=1438996810
CUDA 2.3 + Vista + 190.38 driver

I was thinking the increase in speed of cufft.dll 2.3 was accompanied by a very significant increase in size, but that's fuzzy recall since I'm not doing CUDA.

That data showing no change in free GPU memory is interesting, looks like a bogus reading after init since it indicates only 42.5 MiB in use.
                                                                         Joe

[Richard Haselgrove]

I was thinking the increase in speed of cufft.dll 2.3 was accompanied by a very significant increase in size, but that's fuzzy recall ...

... but correct cufft v2.2 is 1,158 KB: v2.3 is 8,435 KB

[PatrickV2]

OK, dumb question-time for me probably, but:

1. Currently the cufft.dll and cudart.dll in my projects/seti/... directory do not have any version number. Will it matter if I install newer ones?

2. If this is useful to do, how do I do this?

Regards, Patrick.

[Pappa]

OK, dumb question-time for me probably, but:

1. Currently the cufft.dll and cudart.dll in my projects/seti/... directory do not have any version number. Will it matter if I install newer ones?

2. If this is useful to do, how do I do this?

Regards, Patrick.

1. First you need to insure you drivers are 19.038 These drivers (nvidia.com) updated and corrected a few things that may or may not have been visible.The 2.3 cudart.dll is 279K the cufft.dll is 8435K As Long as you have Boinc Stopped you can replace whatever version with the newer 2.3 DLL's.
2. If you have the original or 2.2 DLL's installed you will see a nice speed difference.

[PatrickV2]

OK, dumb question-time for me probably, but:

1. Currently the cufft.dll and cudart.dll in my projects/seti/... directory do not have any version number. Will it matter if I install newer ones?

2. If this is useful to do, how do I do this?

Regards, Patrick.

1. First you need to insure you drivers are 19.038 These drivers (nvidia.com) updated and corrected a few things that may or may not have been visible.The 2.3 cudart.dll is 279K the cufft.dll is 8435K As Long as you have Boinc Stopped you can replace whatever version with the newer 2.3 DLL's.
2. If you have the original or 2.2 DLL's installed you will see a nice speed difference.

1. I'm running the 195.62 drivers, so I assumed I was covered here.

2. I downloaded the Windows 74 64 bit 2.3 cuda toolkit from nvidia (cudatoolkit_2.3_win_64.exe). "installed' (or rather unpacked) it, and copied the cufft.dll and cudart.dll from the CUDA/bin64/ directory over the version in projects/seti.../.

These DLLs were:

cufft.dll: 8,882,176 bytes
cudart.dll: 391,680 bytes

This seems to differ from your numbers?

I also have these DLLs in the bin (without 64) directory, there they are:

cufft.dll: 8,942,592 bytes
cudart.dll: 285,696 bytes


However,right after cuda processing resumed, I got a message from Win7 that the cufft.dl or cudart.dll ( can't remember which one), in a big requester, saying they were not designed to run on Win7-64bit. The cuda WUs then failed in short order, so I aborted, and copied back the original BOINC_Data directory I had backupped previous to this.

Any ideas if I need to do something 'special' under Win7-64 to use those DLLs?

Regards, Patrick.

EDIT: Added exact sizes, fixed some typos.

[Richard Haselgrove]

The SETI CUDA apps themselves are only 32-bit, so I reckon you probably need the 32-bit DLLs to support them. That may account for the difference is size.

[PatrickV2]

The SETI CUDA apps themselves are only 32-bit, so I reckon you probably need the 32-bit DLLs to support them. That may account for the difference is size.

Okay, I re-did my action, but this time copied the two DLLs from the bin/ directory over. Machine is processing CUDA now, and no error-messages...

Keeping fingers crossed!

Regards, Patrick.