Dear List, I run a system with 2 CPUs to run two concurrent parsec benchmarks. The problem is that I see a memory controller bandwidth of 6.3 GBps. But the peakBW is 4.2 GBps !
system.mem_ctrls.bw_total::total 6311068945 # Total bandwidth to/from this memory (bytes/s) system.mem_ctrls.peakBW 4266.00 # Theoretical peak bandwidth in MB/s Am I mistaking something? Benchmarks are Blackscholes and Fluidanimate. --------------------------------------------------------------------------------------------------------------------------------------------- Command line: ./build/ALPHA/gem5.fast -d /root/gem5run-large/busy -r -e configs/example/ruby_fs.py --kernel=alpha-vmlinux_2.6.27-gcc_4.3.4 --disk-image=linux-parsec-2-1-m5-with-test-inputs.img --topology=Mesh --mesh-rows=1 --l2cache --l2_size=2MB --num-l2caches=1 --num-dirs=1 --mem-type=LPDDR2_S4_1066_x32 --mem-size=1024MB --script=large-17sh.conf/busy.rcS -n 2 ------------------------------------------------------------------------------------------------------------------------------------------- and the busy.rcS: ------------------------------------------------------------------------------------------------------------------------------------------ #!/bin/sh cd /parsec/install/bin /sbin/m5 dumpresetstats 0 100000000 ./fluidanimate 1 5 /parsec/install/inputs/fluidanimate/in_300K.fluid /parsec/install/inputs/fluidanimate/out.fluid & ./blackscholes 1 /parsec/install/inputs/blackscholes/in_64K.txt /parsec/install/inputs/blackscholes/prices.txt echo "Done :D" /sbin/m5 exit /sbin/m5 exit ------------------------------------------------------------------------------------------------------------------------------------------- I would appreciate if someone let me know what is wrong with this ... Thanks in advance :)
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