CPU features: Difference between revisions
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=== Compiler CPU flags === | |||
customize the TensorFlow source build to take advantage of the availability of some CPU features that contribute to a speedier execution of TensorFlow code | |||
Available CPU flags on target system can be found with following command and Linux [https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/arch/x86/include/asm/cpufeatures.h kernel source helps] unravel the meaning for each flag, | |||
<code>$ more /proc/cpuinfo | grep flags</code> | |||
{| class="wikitable" | |||
! colspan="1" rowspan="1" |No | |||
! colspan="1" rowspan="1" |Flag | |||
! colspan="1" rowspan="1" |CPU Feature | |||
! colspan="1" rowspan="1" |Additional Info | |||
|- | |||
|1 | |||
|ssse3 | |||
|Supplemental Streaming SIMD Extensions 3 (SSSE-3) instruction set | |||
| | |||
|- | |||
|2 | |||
|sse4_1 | |||
|Streaming SIMD Extensions 4.1 (SSE-4.1) instruction set | |||
| | |||
|- | |||
|3 | |||
|sse4_2 | |||
|Streaming SIDM Extensions 4.2 (SSE-4.2) instruction set | |||
| | |||
|- | |||
|4 | |||
|fma | |||
|Fused multiply-add (FMA) instruction set | |||
| | |||
|- | |||
|5 | |||
|cx16 | |||
|CMPXCHG16B instruction (double-width compare-and-swap) | |||
| | |||
|- | |||
|6 | |||
|popcnt | |||
|Population count instruction (count number of bits set to 1) | |||
| | |||
|- | |||
|7 | |||
|avx | |||
|Advanced Vector Extensions | |||
| | |||
|- | |||
|8 | |||
|avx2 | |||
|Advanced Vector Extension 2 | |||
| | |||
|} | |||
===References=== | ===References=== | ||
<references/> | <references/> | ||
Revision as of 08:42, 24 March 2023
Compiler CPU flags
customize the TensorFlow source build to take advantage of the availability of some CPU features that contribute to a speedier execution of TensorFlow code
Available CPU flags on target system can be found with following command and Linux kernel source helps unravel the meaning for each flag,
$ more /proc/cpuinfo | grep flags
| No | Flag | CPU Feature | Additional Info |
|---|---|---|---|
| 1 | ssse3 | Supplemental Streaming SIMD Extensions 3 (SSSE-3) instruction set | |
| 2 | sse4_1 | Streaming SIMD Extensions 4.1 (SSE-4.1) instruction set | |
| 3 | sse4_2 | Streaming SIDM Extensions 4.2 (SSE-4.2) instruction set | |
| 4 | fma | Fused multiply-add (FMA) instruction set | |
| 5 | cx16 | CMPXCHG16B instruction (double-width compare-and-swap) | |
| 6 | popcnt | Population count instruction (count number of bits set to 1) | |
| 7 | avx | Advanced Vector Extensions | |
| 8 | avx2 | Advanced Vector Extension 2 |