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29 lines
988 B
Plaintext
29 lines
988 B
Plaintext
SHORT Ring Transfer bandwidth
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EVENTSET
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FIXC0 INSTR_RETIRED_ANY
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FIXC1 CPU_CLK_UNHALTED_CORE
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FIXC2 CPU_CLK_UNHALTED_REF
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SBOX0C0 RING_BL_USED_ANY
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SBOX1C0 RING_BL_USED_ANY
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SBOX2C0 RING_BL_USED_ANY
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SBOX3C0 RING_BL_USED_ANY
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METRICS
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Runtime (RDTSC) [s] time
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Runtime unhalted [s] FIXC1*inverseClock
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Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
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CPI FIXC1/FIXC0
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Ring transfer bandwidth [MByte/s] 1.E-06*(SBOX0C0+SBOX1C0+SBOX2C0+SBOX3C0)*32/time
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Ring transfer data volume [GByte] 1.E-09*(SBOX0C0+SBOX1C0+SBOX2C0+SBOX3C0)*32
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LONG
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Formulas:
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Ring transfer bandwidth [MByte/s] = 1.E-06*(SUM(SBOXxC0)*32)/time
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Ring transfer data volume [GByte] = 1.E-09*(SUM(SBOXxC0)*32)
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--
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The SBOXes manage the transfer between the socket local ring(s). For micro architectures
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prior to Haswell, the SBOX and QBOX was similar as only a single ring was used.
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Haswell systems with a high core count assemble two rings that are connected through
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the SBOXes, the traffic between the sockets is handled by the QBOXes.
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