Actual source code: smatlab.c
2: #include <petscsys.h>
4: /*@C
5: PetscStartMatlab - starts up MATLAB with a MATLAB script
7: Logically Collective, but only processor zero in the communicator does anything
9: Input Parameters:
10: + comm - MPI communicator
11: . machine - optional machine to run MATLAB on
12: - script - name of script (without the .m)
14: Output Parameter:
15: . fp - a file pointer returned from `PetscPOpen()`
17: Level: intermediate
19: Notes:
20: This overwrites your matlab/startup.m file
22: The script must be in your MATLAB path or current directory
24: Assumes that all machines share a common file system
26: .seealso: `PetscPOpen()`, `PetscPClose()`
27: @*/
28: PetscErrorCode PetscStartMatlab(MPI_Comm comm, const char machine[], const char script[], FILE **fp)
29: {
30: FILE *fd;
31: char command[512];
32: #if defined(PETSC_HAVE_UCBPS) && defined(PETSC_HAVE_POPEN)
33: char buf[1024], *found;
34: PetscMPIInt rank;
35: #endif
37: #if defined(PETSC_HAVE_UCBPS) && defined(PETSC_HAVE_POPEN)
38: /* check if MATLAB is not already running */
39: PetscPOpen(comm, machine, "/usr/ucb/ps -ugxww | grep matlab | grep -v grep", "r", &fd);
40: MPI_Comm_rank(comm, &rank);
41: if (rank == 0) found = fgets(buf, 1024, fd);
42: MPI_Bcast(&found, 1, MPI_CHAR, 0, comm);
43: PetscPClose(comm, fd);
44: if (found) return 0;
45: #endif
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: PetscPOpen(comm, machine, command, "r", &fd);
53: PetscPClose(comm, fd);
54: #endif
55: }
56: #if defined(PETSC_HAVE_POPEN)
57: PetscPOpen(comm, machine, "xterm -display ${DISPLAY} -e matlab -nosplash", "r", fp);
58: #endif
59: return 0;
60: }