Re: [perfmon2] [Ptools-perfapi] how to count flops without PAPI_FP_OPS

[Philip M. <mu...@cs...>]

Hi George,

Errors like this usually indicate a bug in the PAPI event-table, which  
maps PAPI preset (abstract) events to native event names, graciously  
provided to us by libpfm. It sounds like this event table is pretty  
slim for this CPU.

Now, I'm assuming you have installed perfctr as your patch.

Can you run the 'showevtinfo' from the libpfm/examples directory,  
papi_native_avail and also send us the /proc/cpuinfo?

There could be some stuff missing on the LV cpus...

Phil

On Mar 17, 2009, at 6:05 AM, George Markomanolis wrote:

> Dear all,
>
> First of all I should say that I am newbie to PAPI. I have installed
> PAPI on debian lenny and I think it's ok.
> How am I sure that the installation is ok?
> I run papi_avail and it says that only 6 events are yes but no
> PAPI_FP_OPS. How could I count flops?
> Events with yes:
> PAPI_L2_TCM  0x80000007  Yes   No   Level 2 cache misses
> PAPI_BR_TKN  0x8000002c  Yes   No   Conditional branch instructions  
> taken
> PAPI_BR_MSP  0x8000002e  Yes   No   Conditional branch instructions
> mispredicted
> PAPI_TOT_INS 0x80000032  Yes   No   Instructions completed
> PAPI_BR_INS  0x80000037  Yes   No   Branch instructions
> PAPI_TOT_CYC 0x8000003b  Yes   No   Total cycles
>
> My laptop has a 32bit low voltage cpum core duo L2400. Is this a  
> problem?
>
>
> Also what's about this error?
> PAPI Error: pfm_find_full_event(LAST_LEVEL_CACHE_REFERENCES, 
> 0xbfb1a0e4):
> event not found.
> The program doesn't crash but I have this error in every program  
> with papi.
>
> The kernel is 2.6.25 and I have installed PAPI 3.6.2 from tar file  
> (no cvs).
>
> Thanks a lot,
> best regards,
> George Markomanolis
>
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