Do not hardcode the maximum number of workers in the starpu.h header. Instead,

we use autoconf to compute this number.

configure.ac

@@ -658,6 +658,13 @@ AC_MSG_RESULT($perf_model_dir)
 AC_CHECK_LIB([rt], [clock_gettime])
 AC_CHECK_FUNCS([clock_gettime])
 
+# Compute the maximum number of workers (we round it to 16 for alignment
+# purposes).
+nmaxworkers=`expr 16 \* \( \( $nmaxcpus + $nmaxcudadev + $nmaxopencldev + 15 \) / 16 \) `
+AC_MSG_CHECKING(Maximum number of workers)
+AC_MSG_RESULT($nmaxworkers)
+AC_DEFINE_UNQUOTED(STARPU_NMAXWORKERS, [$nmaxworkers], [Maximum number of workers])
+
 ###############################################################################
 #                                                                             #
 #                                    MPI                                      #

include/starpu.h

@@ -20,10 +20,6 @@
 #include <stdlib.h>
 #include <stdint.h>
 
-/* Maximum number of workers supported by StarPU, the actual number of worker
- * is given by the startpu_get_worker_count method */
-#define STARPU_NMAXWORKERS	32
-
 #include <starpu_config.h>
 #include <starpu_util.h>
 #include <starpu_data.h>

include/starpu_config.h.in

@@ -39,6 +39,7 @@
 #undef STARPU_NMAXBUFS
 #undef STARPU_MAXCUDADEVS
 #undef STARPU_MAXOPENCLDEVS
+#undef STARPU_NMAXWORKERS
 
 #undef STARPU_HAVE_LIBNUMA