SHORT Overview of arithmetic and main memory performance

EVENTSET
PMC0  FP_DP_FIXED_OPS_SPEC
PMC1  FP_DP_SCALE_OPS_SPEC
PMC2  L2D_CACHE_REFILL
PMC3  L2D_CACHE_WB
PMC4  L2D_SWAP_DM
PMC5  L2D_CACHE_MIBMCH_PRF


METRICS
Runtime (RDTSC) [s] time
DP (FP) [MFLOP/s] 1E-06*(PMC0)/time
DP (FP+SVE128) [MFLOP/s] 1E-06*(((PMC1*128.0)/128.0)+PMC0)/time
DP (FP+SVE256) [MFLOP/s] 1E-06*(((PMC1*256.0)/128.0)+PMC0)/time
DP (FP+SVE512) [MFLOP/s] 1E-06*(((PMC1*512.0)/128.0)+PMC0)/time
Memory read bandwidth [MBytes/s] 1.0E-06*(PMC2-(PMC4+PMC5))*256.0/time
Memory read data volume [GBytes] 1.0E-09*(PMC2-(PMC4+PMC5))*256.0
Memory write bandwidth [MBytes/s] 1.0E-06*(PMC3)*256.0/time
Memory write data volume [GBytes] 1.0E-09*(PMC3)*256.0
Memory bandwidth [MBytes/s] 1.0E-06*((PMC2-(PMC4+PMC5))+PMC3)*256.0/time
Memory data volume [GBytes] 1.0E-09*((PMC2-(PMC4+PMC5))+PMC3)*256.0
Operational intensity (FP) [FLOP/Byte] PMC0/(((PMC2-(PMC4+PMC5))+PMC3)*256.0)
Operational intensity (FP+SVE128) [FLOP/Byte] (((PMC1*128.0)/128.0)+PMC0)/(((PMC2-(PMC4+PMC5))+PMC3)*256.0)
Operational intensity (FP+SVE256) [FLOP/Byte] (((PMC1*256.0)/128.0)+PMC0)/(((PMC2-(PMC4+PMC5))+PMC3)*256.0)
Operational intensity (FP+SVE512) [FLOP/Byte] (((PMC1*512.0)/128.0)+PMC0)/(((PMC2-(PMC4+PMC5))+PMC3)*256.0)


LONG
Formulas:
DP (FP) [MFLOP/s] = 1E-06*FP_DP_FIXED_OPS_SPEC/time
DP (FP+SVE128) [MFLOP/s] = 1.0E-06*(FP_DP_FIXED_OPS_SPEC+((FP_DP_SCALE_OPS_SPEC*128)/128))/time
DP (FP+SVE256) [MFLOP/s] = 1.0E-06*(FP_DP_FIXED_OPS_SPEC+((FP_DP_SCALE_OPS_SPEC*256)/128))/time
DP (FP+SVE512) [MFLOP/s] = 1.0E-06*(FP_DP_FIXED_OPS_SPEC+((FP_DP_SCALE_OPS_SPEC*512)/128))/time
Memory read bandwidth [MBytes/s] = 1.0E-06*(L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))*256.0/runtime
Memory read data volume [GBytes] = 1.0E-09*(L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))*256.0
Memory write bandwidth [MBytes/s] = 1.0E-06*(L2D_CACHE_WB)*256.0/runtime
Memory write data volume [GBytes] = 1.0E-09*(L2D_CACHE_WB)*256.0
Memory bandwidth [MBytes/s] = 1.0E-06*((L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))+L2D_CACHE_WB)*256.0/runtime
Memory data volume [GBytes] = 1.0E-09*((L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))+L2D_CACHE_WB)*256.0
Operational intensity (FP) [FLOP/Byte] = FP_DP_FIXED_OPS_SPEC/(((L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))+L2D_CACHE_WB)*256.0)
Operational intensity (FP+SVE128) [FLOP/Byte] = (FP_DP_FIXED_OPS_SPEC+((FP_DP_SCALE_OPS_SPEC*128)/128)/(((L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))+L2D_CACHE_WB)*256.0)
Operational intensity (FP+SVE256) [FLOP/Byte] = (FP_DP_FIXED_OPS_SPEC+((FP_DP_SCALE_OPS_SPEC*256)/128)/(((L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))+L2D_CACHE_WB)*256.0)
Operational intensity (FP+SVE512) [FLOP/Byte] = (FP_DP_FIXED_OPS_SPEC+((FP_DP_SCALE_OPS_SPEC*512)/128)/(((L2D_CACHE_REFILL-(L2D_SWAP_DM+L2D_CACHE_MIBMCH_PRF))+L2D_CACHE_WB)*256.0)
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Profiling group to measure memory bandwidth and double-precision FP rate for scalar and SVE vector
operations with different widths. The events for the SVE metrics assumes that all vector elements
are active. The cache line size for A64FX is 256 Byte.
