diff --git a/Grid_signal.cc b/Grid_signal.cc
deleted file mode 100755
index e943c3b0..00000000
--- a/Grid_signal.cc
+++ /dev/null
@@ -1,82 +0,0 @@
-/****************************************************************************/
-/* PAB: Signal magic. Processor state dump is x86-64 specific               */
-/****************************************************************************/
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <sys/stat.h> 
-#include <sys/time.h>
-#include <signal.h>
-
-#include "Grid.h"
-
-#undef __X86_64
-namespace dpo {
-
-void Grid_init(void)
-{
-  Grid_debug_handler_init();
-}
-double usecond(void) {
-  struct timeval tv;
-  gettimeofday(&tv,NULL);
-  return 1.0*tv.tv_usec + 1.0e6*tv.tv_sec;
-}
-
-void Grid_sa_signal_handler(int sig,siginfo_t *si,void * ptr)
-{
-         ucontext_t * uc= (ucontext_t *)ptr;
-
-  printf("Caught signal %d\n",si->si_signo);
-  printf("  mem address %llx\n",(uint64_t)si->si_addr);
-  printf("         code %d\n",si->si_code);
-
-#ifdef __X86_64
-  struct sigcontext *sc = (struct sigcontext *)&uc->uc_mcontext;
-  printf("  instruction %llx\n",(uint64_t)sc->rip);
-
-#define REG(A)  printf("  %s %lx\n",#A, sc-> A);
-  REG(rdi);
-  REG(rsi);
-  REG(rbp);
-  REG(rbx);
-  REG(rdx);
-  REG(rax);
-  REG(rcx);
-  REG(rsp);
-  REG(rip);
-
-
-  REG(r8);
-  REG(r9);
-  REG(r10);
-  REG(r11);
-  REG(r12);
-  REG(r13);
-  REG(r14);
-  REG(r15);
-#endif
-
-  fflush(stdout);
-
-  if ( si->si_signo == SIGSEGV ) {
-    printf("Grid_sa_signal_handler: Oops... this was a sigsegv you naughty naughty programmer. Goodbye\n");
-    fflush(stdout);
-    exit(-1);
-  }
-  return;
-};
-
-void Grid_debug_handler_init(void)
-{
-  struct sigaction sa,osa;
-  sigemptyset (&sa.sa_mask);
-  sa.sa_sigaction= Grid_sa_signal_handler;
-  sa.sa_flags    = SA_SIGINFO;
-  sigaction(SIGSEGV,&sa,NULL);
-  sigaction(SIGTRAP,&sa,NULL);
-}
-}