Re: [Gems-users] Opal wont catch magic breakpoint

[Luke Yen <lyen@xxxxxxxxxxx>]

  The opal0.sim-step command takes as argument number of processor 
instructions to execute, so 100000 might be insufficient for the 
processor to reach the second breakpoint.
   Also check whether the breakpoint is caught inside Opal's magic 
instruction callback handler, in opal/system/system.C.  Grep for 
system_breakpoint() and insert some print statements.
   Luke

On Mon, 10 Mar 2008, Xuan Qi wrote:

> Hi everyone,
>
> I am testing the magic breakpoint on my target machine. I use the a simple
> program which is provided at $GEMS/opal/benchmark/float.C. The main part
> of it is:
>
> ......
>  /* -- 4 == Do_Breakpoint */
>  RUBY_MAGIC_CALL( 4 );
>
>  for (int i = 0; i < numTrials; i++) {
>
>    result_s = ((float32) fabs( pos1_s )) * value_s ;
>    result_s = ((float32) fabs( neg1_s )) * value_s ;
>
>    result_d = (fabs( pos1_d )) * value_d ;
>    result_d = (fabs( neg1_d )) * value_d ;
>
>  }
>
>  /* -- 4 == Do_Breakpoint */
>  RUBY_MAGIC_CALL( 4 );
> ......
>
> And I use the following script to test the magic breakpoints:
>
> read-configuration sarek-2core.conf
> cpu-switch-time 1
> instruction-fetch-mode instruction-fetch-trace
> istc-disable
> dstc-disable
> magic-break-enable
> load-module ruby
> ruby0.setparam g_NUM_PROCESSORS 2
> ruby0.setparam g_MEMORY_SIZE_BYTES 536870912
> ruby0.setparam g_PROCS_PER_CHIP 2
> ruby0.setparam g_NUM_MEMORIES 1
> ruby0.setparam NUMBER_OF_VIRTUAL_NETWORKS 6
> ruby0.init
> @conf.con0.input = "cd ALP/MPGenc/verify\n";
> @conf.con0.input = "./float 5\n";
> c
> echo "first breakpoint"
> load-module opal
> opal0.init
> opal0.sim-start "output_2core.opal"
> opal0.sim-step 100000
>
> Simulation will stop at first magic breakpoint and load opal module. But
> when opal drives simulation, it won't catch the second magic breakpoint.
> Am I missing something? Thank you...
>
> Best regards,
> Xuan Qi
>
>
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