Hi, Please find enclosed the script file and the program code for matrix multiplication which I tried.
On running gem5 binary with --version option I get "Gem5.opt 2.0". I tried running a simple hello world program with se.py and got the same error. This is the command line I used for it ../gem5/build/ARM/gem5.opt ../gem5/configs/example/se.py --cpu-type=TimingSimpleCPU --num-cpus=4 --num-work-ids=3 -c hello3 --caches --l1d_size=2kB --l1i_size=2kB --l2cache --l2_size=2kB But if I use DerivO3CPU it works fine. Best Gagan -----Original Message----- From: gem5-users [mailto:gem5-users-boun...@gem5.org] On Behalf Of Ciro Santilli Sent: Tuesday, 17 April 2018 10:04 To: gem5 users mailing list <gem5-users@gem5.org> Subject: Re: [gem5-users] Multi-threading on ARM timing CPU On Tue, Apr 17, 2018 at 8:10 AM, Singh, G. <g.si...@tue.nl> wrote: > Hi All, > > > > I am trying to run a simple multi-threaded program on ARM processor > with 4 cpu's and 4 threads. > > This program works perfectly for DerivO3CPU but the same program on > timing model gives the errors given > > below. Actually I get the correct result but the program run does not > complete. > Please provide the following: - gem5 version (git SHA) - full gem5 command line - how to obtain the required blobs (rootfs, dtb, etc.) What program are you running? Does it fail on every multithreaded program, or just this partiular one? Can you produce a minimal single C file example that also fails and give us the source? > > > Also, is there an option to simulate multithreaded code with each > thread on different processor using se.py? > Please ask one question per email in the future to make answers more reusable for other people. ;-) (I don't know the answer to this one yet) > Right now I am writing a new script file. > > > > gem5.opt: build/ARM/cpu/simple/timing.cc:237: virtual void > TimingSimpleCPU::suspendContext(ThreadID): Assertion `_status == > BaseSimpleCPU::Running' failed. > > Program aborted at tick 4576216124000 > > --- BEGIN LIBC BACKTRACE --- > > ../../tools/gem5/build/ARM/gem5.opt(_Z15print_backtracev+0x28)[0xb05d2 > 8] > > ../../tools/gem5/build/ARM/gem5.opt(_Z12abortHandleri+0x46)[0xb24396] > > /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7efd25543390] > > /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x7efd24269428] > > /lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7efd2426b02a] > > /lib/x86_64-linux-gnu/libc.so.6(+0x2dbd7)[0x7efd24261bd7] > > /lib/x86_64-linux-gnu/libc.so.6(+0x2dc82)[0x7efd24261c82] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN15TimingSimpleCPU14suspendConte > xtEs+0x335)[0xfe1035] > > ../../tools/gem5/build/ARM/gem5.opt(_Z13exitGroupFuncP11SyscallDesciP1 > 1LiveProcessP13ThreadContext+0x57)[0xb85677] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN11SyscallDesc9doSyscallEiP11Liv > eProcessP13ThreadContext+0xa8)[0xb8afe8] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN11LiveProcess7syscallElP13Threa > dContext+0x49)[0xb7bc09] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN6ArmISA14SupervisorCall6invokeE > P13ThreadContextRK14RefCountingPtrI10StaticInstE+0x6a)[0xd8317a] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN13BaseSimpleCPU9advancePCERKSt1 > 0shared_ptrI9FaultBaseE+0x104)[0xfe27a4] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN15TimingSimpleCPU11advanceInstE > RKSt10shared_ptrI9FaultBaseE+0x39)[0xfded49] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN15TimingSimpleCPU14completeIfet > chEP6Packet+0x1d9)[0xfdf149] > > ../../tools/gem5/build/ARM/gem5.opt(_ZN10EventQueue10serviceOneEv+0xb1 > )[0xb14a21] > > ../../tools/gem5/build/ARM/gem5.opt(_Z9doSimLoopP10EventQueue+0x50)[0x > b42020] > > ../../tools/gem5/build/ARM/gem5.opt(_Z8simulatem+0x203)[0xb425f3] > > ../../tools/gem5/build/ARM/gem5.opt[0x1053802] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x785 > 2)[0x7efd25800772] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c) > [0x7efd2593705c] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6ff > d)[0x7efd257fff1d] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x712 > 4)[0x7efd25800044] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x712 > 4)[0x7efd25800044] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c) > [0x7efd2593705c] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x > 7efd257f8da9] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x613 > b)[0x7efd257ff05b] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c) > [0x7efd2593705c] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6ff > d)[0x7efd257fff1d] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c) > [0x7efd2593705c] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x > 7efd257f8da9] > > /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyRun_StringFlags+0x76)[ > 0x7efd258731f6] > > --- END LIBC BACKTRACE --- > > Aborted (core dumped) > > > > Best > > Gagan > > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
armInOrder.py
Description: armInOrder.py
#include <omp.h>
#include <stdio.h>
#include <stdlib.h>
#define NRA 64 /* number of rows in matrix A */
#define NCA 64 /* number of columns in matrix A */
#define NCB 64 /* number of columns in matrix B */
int main (int argc, char *argv[])
{
int tid, nthreads, i, j, k, chunk;
double a[NRA][NCA], /* matrix A to be multiplied */
b[NCA][NCB], /* matrix B to be multiplied */
c[NRA][NCB]; /* result matrix C */
chunk = 10; /* set loop iteration chunk size */
/*** Spawn a parallel region explicitly scoping all variables ***/
omp_set_num_threads(4);
#pragma omp parallel shared(a,b,c,nthreads,chunk) private(tid,i,j,k)
{
tid = omp_get_thread_num();
if (tid == 0)
{
nthreads = omp_get_num_threads();
printf("Starting matrix multiple example with %d threads\n",nthreads);
printf("Initializing matrices...\n");
}
/*** Initialize matrices ***/
#pragma omp for schedule (static, chunk)
for (i=0; i<NRA; i++)
for (j=0; j<NCA; j++)
a[i][j]= i+j;
#pragma omp for schedule (static, chunk)
for (i=0; i<NCA; i++)
for (j=0; j<NCB; j++)
b[i][j]= i*j;
#pragma omp for schedule (static, chunk)
for (i=0; i<NRA; i++)
for (j=0; j<NCB; j++)
c[i][j]= 0;
/*** Do matrix multiply sharing iterations on outer loop ***/
/*** Display who does which iterations for demonstration purposes ***/
printf("Thread %d starting matrix multiply...\n",tid);
#pragma omp for schedule (static, chunk)
for (i=0; i<NRA; i++)
{
printf("Thread=%d did row=%d\n",tid,i);
for(j=0; j<NCB; j++)
for (k=0; k<NCA; k++)
c[i][j] += a[i][k] * b[k][j];
}
} /*** End of parallel region ***/
/*** Print results ***/
printf("******************************************************\n");
printf("Result Matrix:\n");
for (i=0; i<NRA; i++)
{
for (j=0; j<NCB; j++)
printf("%6.2f ", c[i][j]);
printf("\n");
}
printf("******************************************************\n");
printf ("Done.\n");
return 0;
}_______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
