1 2 #include <petscsys.h> 3 4 /*@C 5 PetscStartMatlab - starts up MATLAB with a MATLAB script 6 7 Logically Collective, but only processor zero in the communicator does anything 8 9 Input Parameters: 10 + comm - MPI communicator 11 . machine - optional machine to run MATLAB on 12 - script - name of script (without the .m) 13 14 Output Parameter: 15 . fp - a file pointer returned from `PetscPOpen()` 16 17 Level: intermediate 18 19 Notes: 20 This overwrites your matlab/startup.m file 21 22 The script must be in your MATLAB path or current directory 23 24 Assumes that all machines share a common file system 25 26 .seealso: `PetscPOpen()`, `PetscPClose()` 27 @*/ 28 PetscErrorCode PetscStartMatlab(MPI_Comm comm, const char machine[], const char script[], FILE **fp) { 29 FILE *fd; 30 char command[512]; 31 #if defined(PETSC_HAVE_UCBPS) && defined(PETSC_HAVE_POPEN) 32 char buf[1024], *found; 33 PetscMPIInt rank; 34 #endif 35 36 PetscFunctionBegin; 37 #if defined(PETSC_HAVE_UCBPS) && defined(PETSC_HAVE_POPEN) 38 /* check if MATLAB is not already running */ 39 PetscCall(PetscPOpen(comm, machine, "/usr/ucb/ps -ugxww | grep matlab | grep -v grep", "r", &fd)); 40 PetscCallMPI(MPI_Comm_rank(comm, &rank)); 41 if (rank == 0) found = fgets(buf, 1024, fd); 42 PetscCallMPI(MPI_Bcast(&found, 1, MPI_CHAR, 0, comm)); 43 PetscCall(PetscPClose(comm, fd)); 44 if (found) PetscFunctionReturn(0); 45 #endif 46 47 if (script) { 48 /* the remote machine won't know about current directory, so add it to MATLAB path */ 49 /* the extra \" are to protect possible () in the script command from the shell */ 50 sprintf(command, "echo \"delete ${HOMEDIRECTORY}/matlab/startup.m ; path(path,'${WORKINGDIRECTORY}'); %s \" > ${HOMEDIRECTORY}/matlab/startup.m", script); 51 #if defined(PETSC_HAVE_POPEN) 52 PetscCall(PetscPOpen(comm, machine, command, "r", &fd)); 53 PetscCall(PetscPClose(comm, fd)); 54 #endif 55 } 56 #if defined(PETSC_HAVE_POPEN) 57 PetscCall(PetscPOpen(comm, machine, "xterm -display ${DISPLAY} -e matlab -nosplash", "r", fp)); 58 #endif 59 PetscFunctionReturn(0); 60 } 61