Ubuntu - 如何判断CPU应用程序当前是否正在使用AVX或SSE？

我目前在许多具有 GPU 的服务器上运行 BOINC。

服务器运行 GPU 和 CPU BOINC 应用程序。

由于 AVX 和 SSE 在 CPU 应用程序中使用时会降低 CPU 频率，因此我必须选择一起运行哪个 CPU/GPU，因为某些 GPU 应用程序会遇到瓶颈（运行时间完成速度较慢），而其他应用程序则不会。

目前，一些 CPU 应用程序已命名，因此可以清楚地看出它们是否使用 AVX，但大多数应用程序并未使用。

因此，我是否可以运行任何命令以及某种查看方式来查看当前运行的任何 CPU 应用程序是否正在使用 AVX 或 SSE（任何版本）？

另请注意，我是否应该以相同的方式处理任何 FMA 使用情况（例如，它是否会因 CPU 温度增加而降低 CPU 频率）？

Thanks

您可以使用perf top http://man7.org/linux/man-pages/man1/perf-top.1.html查看实时执行的 AVX 和 SSE 指令数量以及可执行文件和共享库名称：

perf top -e fp_arith_inst_retired.128b_packed_single -e fp_arith_inst_retired.128b_packed_double -e fp_arith_inst_retired.256b_packed_single -e fp_arith_inst_retired.256b_packed_double

计数器描述（来自perf list http://man7.org/linux/man-pages/man1/perf-list.1.htmlIntel Coffee Lake CPU 上的输出）：

floating point:
  fp_arith_inst_retired.128b_packed_double          
       [Number of SSE/AVX computational 128-bit packed double precision floating-point instructions retired. Each count represents 2 computations. Applies to SSE* and AVX*
        packed double precision floating-point instructions: ADD SUB MUL DIV MIN MAX SQRT DPP FM(N)ADD/SUB. DPP and FM(N)ADD/SUB instructions count twice as they perform
        multiple calculations per element]
  fp_arith_inst_retired.128b_packed_single          
       [Number of SSE/AVX computational 128-bit packed single precision floating-point instructions retired. Each count represents 4 computations. Applies to SSE* and AVX*
        packed single precision floating-point instructions: ADD SUB MUL DIV MIN MAX RCP RSQRT SQRT DPP FM(N)ADD/SUB. DPP and FM(N)ADD/SUB instructions count twice as they
        perform multiple calculations per element]
  fp_arith_inst_retired.256b_packed_double          
       [Number of SSE/AVX computational 256-bit packed double precision floating-point instructions retired. Each count represents 4 computations. Applies to SSE* and AVX*
        packed double precision floating-point instructions: ADD SUB MUL DIV MIN MAX SQRT DPP FM(N)ADD/SUB. DPP and FM(N)ADD/SUB instructions count twice as they perform
        multiple calculations per element]
  fp_arith_inst_retired.256b_packed_single          
       [Number of SSE/AVX computational 256-bit packed single precision floating-point instructions retired. Each count represents 8 computations. Applies to SSE* and AVX*
        packed single precision floating-point instructions: ADD SUB MUL DIV MIN MAX RCP RSQRT SQRT DPP FM(N)ADD/SUB. DPP and FM(N)ADD/SUB instructions count twice as they
        perform multiple calculations per element]
  fp_arith_inst_retired.scalar_double               
       [Number of SSE/AVX computational scalar double precision floating-point instructions retired. Each count represents 1 computation. Applies to SSE* and AVX* scalar double
        precision floating-point instructions: ADD SUB MUL DIV MIN MAX SQRT FM(N)ADD/SUB. FM(N)ADD/SUB instructions count twice as they perform multiple calculations per element]
  fp_arith_inst_retired.scalar_single               
       [Number of SSE/AVX computational scalar single precision floating-point instructions retired. Each count represents 1 computation. Applies to SSE* and AVX* scalar single
        precision floating-point instructions: ADD SUB MUL DIV MIN MAX RCP RSQRT SQRT FM(N)ADD/SUB. FM(N)ADD/SUB instructions count twice as they perform multiple calculations
        per element]
  fp_assist.any                                     
       [Cycles with any input/output SSE or FP assist]