ifdefs for openmp

GraphBLAS · Jan 2, 2025 · 19e8dea · 19e8dea
1 parent 5239da2
commit 19e8dea
Show file tree

Hide file tree

Showing 5 changed files with 20 additions and 1 deletion.
diff --git a/experimental/algorithm/LAGraph_Coarsen_Matching.c b/experimental/algorithm/LAGraph_Coarsen_Matching.c
@@ -60,7 +60,9 @@ This method requires O(n + e) space for an undirected graph with e edges and n n
 #include "LG_internal.h"
 #include "LAGraphX.h"
 
+#ifdef OPENMP_
 #include <omp.h>
+#endif
 
 // #define dbg
 // #define burble

diff --git a/experimental/algorithm/LAGraph_argminmax.c b/experimental/algorithm/LAGraph_argminmax.c
@@ -2,7 +2,9 @@
 
 #include "LG_internal.h"
 #include "LAGraphX.h"
+#ifdef OPENMP_
 #include <omp.h>
+#endif
 #include <LAGraph.h>
 
 // #define USAGE "usage: [x,p] = LAGraph_argminmax (A, minmax, dim)"

diff --git a/experimental/algorithm/LAGraph_cdlp.c b/experimental/algorithm/LAGraph_cdlp.c
@@ -67,7 +67,9 @@
 
 #include <LAGraph.h>
 #include <LAGraphX.h>
+#ifdef OPENMP_
 #include <omp.h>
+#endif
 #include <stdalign.h>
 #include "LG_internal.h"
 
@@ -198,7 +200,11 @@ int LAGraph_cdlp
     GrB_Index *Sp = NULL, *Si = NULL, *Tp = NULL, *Ti = NULL, *L = NULL, *L_next = NULL ;
     ptable *counts_pool = NULL ;
 
+    #ifdef OPENMP_
     size_t max_threads = omp_get_max_threads();
+    #else
+    size_t max_threads = 1 ;
+    #endif
 
     //--------------------------------------------------------------------------
     // check inputs
@@ -269,7 +275,12 @@ int LAGraph_cdlp
 
 #pragma omp parallel for schedule(dynamic)
         for (GrB_Index i = 0; i < n; i++) {
-            ptable *counts = &counts_pool[omp_get_thread_num()];
+            #ifdef OPENMP_
+            int thread_id = omp_get_thread_num ( ) ;
+            #else
+            int thread_id = 1 ;
+            #endif
+            ptable *counts = &counts_pool[thread_id];
             GrB_Index* neighbors = Si + Sp[i] ;
             GrB_Index sz = Sp[i+1] - Sp[i] ;
             for (GrB_Index j = 0; j < sz; j++) {

diff --git a/experimental/benchmark/matching_demo.c b/experimental/benchmark/matching_demo.c
@@ -35,7 +35,9 @@ NOTE: When complete, prints out the matching vector and E matrix of the input gr
 #include "../../src/benchmark/LAGraph_demo.h"
 #include "LG_internal.h"
 #include "LAGraphX.h"
+#ifdef OPENMP_
 #include <omp.h>
+#endif
 
 // #define VERBOSE
 

diff --git a/experimental/utility/LAGraph_Incidence_Matrix.c b/experimental/utility/LAGraph_Incidence_Matrix.c
@@ -33,7 +33,9 @@ Note that complex types are NOT supported.
 #include "LG_internal.h"
 #include "LAGraphX.h"
 
+#ifdef OPENMP_
 #include <omp.h>
+#endif
 
 // #define dbg