Build performance improvements:
Building all 6 ISAs separately. $ time scons build/ARM/gem5.opt build/MIPS/gem5.opt build/POWER/gem5.opt build/RISCV/gem5.opt build/SPARC/gem5.opt build/X86/gem5.opt real 37m0.210s user 764m20.963s sys 46m18.113s $ du -sh build 16G build Building "ALL" which has all 6 ISAs enabled together. $ time scons build/ALL/gem5.opt real 10m28.289s user 194m31.505s sys 9m36.281s $ du -sh build 4.2G build Which is a build time reduction of about 72% on my system, and a build directory size reduction of about 73%. Gabe On Sat, Nov 6, 2021 at 12:29 AM Gabe Black <[email protected]> wrote: > As mentioned in the other thread, I can upload this hash as a branch on > gerrit if people want to try it out. > > Gabe > > $ git log --oneline origin/develop..multiarch | wc -l > 203 > > $ build/ALL/gem5.opt configs/example/se.py --cpu-type=ArmAtomicSimpleCPU > -c tests/test-progs/hello/bin/arm/linux/hello > build/ALL/base/statistics.hh:280: warn: One of the stats is a legacy stat. > Legacy stat is a stat that does not belong to any statistics::Group. Legacy > stat is deprecated. > gem5 Simulator System. http://gem5.org > gem5 is copyrighted software; use the --copyright option for details. > > gem5 version [DEVELOP-FOR-V21.2] > gem5 compiled Nov 6 2021 00:23:55 > gem5 started Nov 6 2021 00:25:58 > gem5 executing on cake, pid 999191 > command line: build/ALL/gem5.opt configs/example/se.py > --cpu-type=ArmAtomicSimpleCPU -c tests/test-progs/hello/bin/arm/linux/hello > > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > Global frequency set at 1000000000000 ticks per second > build/ALL/mem/mem_interface.cc:791: warn: DRAM device capacity (8192 > Mbytes) does not match the address range assigned (512 Mbytes) > 0: system.remote_gdb: listening for remote gdb on port 7000 > **** REAL SIMULATION **** > build/ALL/sim/simulate.cc:194: info: Entering event queue @ 0. Starting > simulation... > Hello world! > Exiting @ tick 2916500 because exiting with last active thread context > Simulated exit code not 0! Exit code is 13 > > > > [gblack@cake work]$ build/ALL/gem5.opt configs/example/se.py > --cpu-type=X86AtomicSimpleCPU -c tests/test-progs/hello/bin/x86/linux/hello > build/ALL/base/statistics.hh:280: warn: One of the stats is a legacy stat. > Legacy stat is a stat that does not belong to any statistics::Group. Legacy > stat is deprecated. > gem5 Simulator System. http://gem5.org > gem5 is copyrighted software; use the --copyright option for details. > > gem5 version [DEVELOP-FOR-V21.2] > gem5 compiled Nov 6 2021 00:23:55 > gem5 started Nov 6 2021 00:26:10 > gem5 executing on cake, pid 999224 > command line: build/ALL/gem5.opt configs/example/se.py > --cpu-type=X86AtomicSimpleCPU -c tests/test-progs/hello/bin/x86/linux/hello > > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.master is deprecated. `master` is now called `mem_side_ports` > warn: membus.master is deprecated. `master` is now called `mem_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > Global frequency set at 1000000000000 ticks per second > build/ALL/mem/mem_interface.cc:791: warn: DRAM device capacity (8192 > Mbytes) does not match the address range assigned (512 Mbytes) > 0: system.remote_gdb: listening for remote gdb on port 7000 > **** REAL SIMULATION **** > build/ALL/sim/simulate.cc:194: info: Entering event queue @ 0. Starting > simulation... > Hello world! > Exiting @ tick 5943000 because exiting with last active thread context >
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