diff options
Diffstat (limited to 'llvm/docs/CommandGuide')
| -rw-r--r-- | llvm/docs/CommandGuide/llvm-mca.rst | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/llvm/docs/CommandGuide/llvm-mca.rst b/llvm/docs/CommandGuide/llvm-mca.rst index 955adc0a049..5dcd97fb113 100644 --- a/llvm/docs/CommandGuide/llvm-mca.rst +++ b/llvm/docs/CommandGuide/llvm-mca.rst @@ -458,7 +458,8 @@ counters for the dispatch logic, the reorder buffer, the retire control unit, and the register file. Below is an example of ``-all-stats`` output generated by :program:`llvm-mca` -for the dot-product example discussed in the previous sections. +for 300 iterations of the dot-product example discussed in the previous +sections. .. code-block:: none @@ -484,11 +485,16 @@ for the dot-product example discussed in the previous sections. 1, 306 (50.2%) 2, 297 (48.7%) - Scheduler's queue usage: - JALU01, 0/20 - JFPU01, 18/18 - JLSAGU, 0/12 + [1] Resource name. + [2] Average number of used buffer entries. + [3] Maximum number of used buffer entries. + [4] Total number of buffer entries. + + [1] [2] [3] [4] + JALU01 0 0 20 + JFPU01 17 18 18 + JLSAGU 0 0 12 Retire Control Unit - number of cycles where we saw N instructions retired: @@ -528,8 +534,8 @@ representing the number of instructions issued on some number of cycles. In this case, of the 610 simulated cycles, single instructions were issued 306 times (50.2%) and there were 7 cycles where no instructions were issued. -The *Scheduler's queue usage* table shows that the maximum number of buffer -entries (i.e., scheduler queue entries) used at runtime. Resource JFPU01 +The *Scheduler's queue usage* table shows that the average and maximum number of +buffer entries (i.e., scheduler queue entries) used at runtime. Resource JFPU01 reached its maximum (18 of 18 queue entries). Note that AMD Jaguar implements three schedulers: |
