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opt:graphics_cards
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opt:graphics_cards [2018/08/31 08:44] pklapetek |
opt:graphics_cards [2018/08/31 08:56] pklapetek |
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| To check if the graphics card installed on your computer is suitable for GSvit calculations and if GSvit was installed with graphics card support at all, you can run the solver with parameter "test 0", e.g. on Linux system: | To check if the graphics card installed on your computer is suitable for GSvit calculations and if GSvit was installed with graphics card support at all, you can run the solver with parameter "test 0", e.g. on Linux system: | ||
| + | |||
| + | <html> | ||
| + | <pre> | ||
| + | klapetek@pejsek:~/rungsvit/bin> ./gsvit test 0 | ||
| + | Running GSvit tests at level 0 | ||
| + | System has 32 cores | ||
| + | Gsvit is installed at /home/klapetek/rungsvit/bin | ||
| + | Program is compiled with GPU support | ||
| + | Searching for available GPUs... | ||
| + | Found 4 GPUs | ||
| + | The Properties of the Device with ID 0 are | ||
| + | Device Name : Tesla K40m | ||
| + | Device Memory Size : 3489202176 | ||
| + | Block Shared memory size: 49152 | ||
| + | Max grid size : 2147483647x65535x65535 | ||
| + | Max threads dim : 1024x1024x64 | ||
| + | The Properties of the Device with ID 1 are | ||
| + | Device Name : Tesla K20Xm | ||
| + | Device Memory Size : 1744371712 | ||
| + | Block Shared memory size: 49152 | ||
| + | Max grid size : 2147483647x65535x65535 | ||
| + | Max threads dim : 1024x1024x64 | ||
| + | The Properties of the Device with ID 2 are | ||
| + | Device Name : Tesla K20Xm | ||
| + | Device Memory Size : 1744371712 | ||
| + | Block Shared memory size: 49152 | ||
| + | Max grid size : 2147483647x65535x65535 | ||
| + | Max threads dim : 1024x1024x64 | ||
| + | The Properties of the Device with ID 3 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> | ||
| + | <tt> | ||
| + | GPU\ | ||
| + | 1\ | ||
| + | |||
| + | UGPU\ | ||
| + | 0\ | ||
| + | </tt> | ||
| + | <html> | ||
| + | |||
| + | will run the calculation on the Tesla K40m card on our system. | ||
opt/graphics_cards.txt ยท Last modified: 2018/09/04 17:24 by pklapetek
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