Differences

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--- opt:graphics_cards [2018/08/31 08:48]
pklapetek
+++ opt:graphics_cards [2018/08/31 08:56]
pklapetek
@@ Line 22: / Line 22: @@
 Program is compiled with GPU support
 Searching for available GPUs...
-Found 5 GPUs
+Found 4 GPUs
 The Properties of the Device with ID 0 are
 Device Name             : Tesla K40m
@@ Line 46: / Line 46: @@
 Block Shared memory size: 49152
 Max grid size           : 2147483647x65535x65535
 Max threads dim         : 1024x1024x64
-The Properties of the Device with ID 4 are
-Device Name             : Tesla K20Xm
-Device Memory Size      : 1744371712
-Block Shared memory size: 49152
-Max grid size           : 2147483647x65535x65535
-Max threads dim         : 1024x1024x64
 </pre>
 </html>
+This means that you can use four different GPUs on this system (which does not usually happen on a standard computer). GSvit does not support use of all of them at once, but you can still run up to four different instances on different cards. The basic settings for using the GPU are therefore whether to use it at all (GPU directive in the parameter file) and eventually which one to use (UGPU directive in the parameter file). GPUs are numbered from 0, exactly the same way as what <tt>gsvit test 0</tt> outputs, so these settings in the parameter file:
+<html>
+GPU
+UGPU
+<html>
+will run the calculation on the Tesla K40m card on our system.

GSvit documentation