Hello Everyone, The latest commit *135595a* is unable to support multi-core (multi-programmed) simulation on x86 O3CPU. I am pasting the terminal output showing a simple hello world program. The older commits of gem5 do support such multi-core (multi-programmed) simulation. Please note if we do not use SMT and use the number of CPUs as 2 for 2 core simulation, the simulation reaches a point and goes in a never-ending loop.
These problems are due to cause of recent commits, *please also inform all the developers *to not push commit if their commit disturbs the dependencies then try to fix them and after everything is fixed then only merge to public gem5! *Using SMT:* /build/X86/gem5.opt configs/example/se.py -c 'tests/test-progs/hello/bin/x86/linux/hello;tests/test-progs/hello/bin/x86/linux/hello' --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=8 --l1i_assoc=8 --l2_assoc=16 --cacheline_size=64 --cpu-type=DerivO3CPU --mem-type=DDR4_2400_8x8 --mem-size=8GB --sys-clock=2.6GHz --cpu-clock=2.6GHz --smt Global frequency set at 1000000000000 ticks per second warn: DRAM device capacity (16384 Mbytes) does not match the address range assigned (8192 Mbytes) 0: system.remote_gdb: listening for remote gdb on port 7002 0: system.remote_gdb: listening for remote gdb on port 7003 panic: panic condition Memory Usage: 8560136 KBytes Program aborted at tick 0 — BEGIN LIBC BACKTRACE — ./build/X86/gem5.opt(_Z15print_backtracev+0x29)[0x55b3ff0e54e9] ./build/X86/gem5.opt(_Z12abortHandleri+0x4a)[0x55b3ff0f7d9a] /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7f379da2f890] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f379b999e97] /lib/x86_64-linux-gnu/libc.so.6(abort+0x141)[0x7f379b99b801] ./build/X86/gem5.opt(+0x59bd8f)[0x55b3fe8cdd8f] ./build/X86/gem5.opt(_ZN6X86ISA10Interrupts4initEv+0x110)[0x55b3feb80820] ./build/X86/gem5.opt(+0x15feaaa)[0x55b3ff930aaa] ./build/X86/gem5.opt(+0x6d960e)[0x55b3fea0b60e] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7a70)[0x7f379dceb010] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f379de1bbf8] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6364)[0x7f379dce9904] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f379de1bbf8] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6364)[0x7f379dce9904] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f379de1bbf8] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f379dce3409] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x68a5)[0x7f379dce9e45] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f379de1bbf8] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6364)[0x7f379dce9904] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f379de1bbf8] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f379dce3409] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyRun_StringFlags+0x76)[0x7f379dd936d6] ./build/X86/gem5.opt(_Z6m5MainiPPc+0x8f)[0x55b3ff0f66ff] ./build/X86/gem5.opt(main+0x38)[0x55b3fe864a68] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f379b97cb97] ./build/X86/gem5.opt(_start+0x2a)[0x55b3fe88c1aa] — END LIBC BACKTRACE — Aborted (core dumped) *Using 2 CPUs* ./build/X86/gem5.opt configs/example/se.py -c "tests/test-progs/hello/bin/x86/linux/hello;tests/test-progs/hello/bin/x86/linux/hello" --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=8 --l1i_assoc=8 --l2_assoc=16 --cacheline_size=64 --cpu-type=DerivO3CPU --mem-type=DDR4_2400_8x8 --mem-size=8GB --sys-clock='2.6GHz' --cpu-clock='2.6GHz' -n 2 gem5 Simulator System. http://gem5.org gem5 is copyrighted software; use the --copyright option for details. gem5 compiled Feb 11 2020 13:57:48 gem5 started Feb 11 2020 14:21:49 gem5 executing on comparchT640, pid 17942 command line: ./build/X86/gem5.opt configs/example/se.py -c 'tests/test-progs/hello/bin/x86/linux/hello;tests/test-progs/hello/bin/x86/linux/hello' --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=8 --l1i_assoc=8 --l2_assoc=16 --cacheline_size=64 --cpu-type=DerivO3CPU --mem-type=DDR4_2400_8x8 --mem-size=8GB --sys-clock=2.6GHz --cpu-clock=2.6GHz -n 2 Global frequency set at 1000000000000 ticks per second warn: DRAM device capacity (16384 Mbytes) does not match the address range assigned (8192 Mbytes) 0: system.remote_gdb: listening for remote gdb on port 7000 0: system.remote_gdb: listening for remote gdb on port 7001 - - - - REAL SIMULATION **** info: Entering event queue @ 0. Starting simulation... Hello world! Hello world! Best regards, Abhishek
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