Changeset 635 for trunk/user/fft

Timestamp:

Jun 26, 2019, 11:42:37 AM (6 years ago)

Author:

alain

Message:

This version is a major evolution: The physical memory allocators,
defined in the kmem.c, ppm.c, and kcm.c files have been modified
to support remote accesses. The RPCs that were previously user
to allocate physical memory in a remote cluster have been removed.
This has been done to cure a dead-lock in case of concurrent page-faults.

This version 2.2 has been tested on a (4 clusters / 2 cores per cluster)
TSAR architecture, for both the "sort" and the "fft" applications.

File:

• trunk/user/fft/fft.c (modified) (7 diffs)

trunk/user/fft/fft.c

@@ -87 +87 @@
 // parameters
 
-#define DEFAULT_M               12              // 4096 data points
+#define DEFAULT_M               8               // 256 data points
 #define USE_DQT_BARRIER         0               // use DDT barrier if non zero
 #define MODE                    COSIN           // DATA array initialisation mode
@@ -291 +291 @@
     main_tid = (((main_x * y_size) + main_y) * ncores) + main_lid; 
 
-    printf("\n[fft] starts on core[%x,%d] / %d complex points / %d thread(s) / PID %x\n",
-    main_cxy, main_lid, N, nthreads, getpid() );
+    printf("\n[fft] starts / core[%x,%d] / %d points / %d thread(s) / PID %x / cycle %d\n",
+    main_cxy, main_lid, N, nthreads, getpid(), (unsigned int)start_init_cycle );
 
     // allocate memory for the distributed data[i], trans[i], umain[i], twid[i] buffers
@@ -312 +312 @@
     }
 
-    printf("\n[fft] main completes remote_malloc\n");
+#if DEBUG_MAIN
+printf("\n[fft] main completes remote_malloc\n");
+#endif
 
     // arrays initialisation
@@ -319 +321 @@
     InitT( twid );
 
-    printf("\n[fft] main completes arrays init\n");
+#if DEBUG_MAIN
+printf("\n[fft] main completes arrays init\n");
+#endif
 
 #if CHECK 
@@ -357 +361 @@
     }
 
-    printf("\n[fft] main completes barrier init\n");
+#if DEBUG_MAIN
+printf("\n[fft] main completes barrier init\n");
+#endif
 
     // launch other threads to execute the slave() function
@@ -393 +399 @@
                         exit( 0 );
                     }
+
 #if (DEBUG_MAIN & 1)
 unsigned long long debug_cycle; 
@@ -404 +411 @@
     }
 
-    printf("\n[fft] main completes threads creation\n");
+#if DEBUG_MAIN
+printf("\n[fft] main completes threads creation\n");
+#endif
 
     get_cycle( &end_init_cycle );