[Cbe-oss-dev] spu-top

[Yury Serdyuk]

>>>   PID   TID USERNAME   S F  %SPU SPE   TIME    BINARY
>>> 24429 24443 user002    U     0.2  4   14.230    mono
>>> 24429 24442 user002    U     0.2  5   14.231    mono
>>> 24429 24441 user002    U     0.2  6   14.232    mono
>>> 24429 24440 user002    U     0.2  7   14.232    mono
>>> 24429 24439 user002    L     0.0  -1  14.305    mono
>>> 24429 24438 user002    L     0.0  -1  14.305    mono
>>> 24429 24437 user002    L     0.0  -1  14.306    mono
>>> 24429 24436 user002    L     0.0  -1  14.308    mono
>>> 24429 24435 user002    U     0.2  0   14.342    mono
>>> 24429 24434 user002    U     0.2  1   14.343    mono
>>> 24429 24433 user002    U     0.2  2   14.345    mono
>>> 24429 24432 user002    U     0.2  3   14.347    mono
>>>      
>>>
>>What does these values mean ?
>>    
>>
>
>-1 means that the context is currently not loaded to any SPU.
>  
>
But what can be the reason of that ?
In fact, I am running my program on QS22 server with 16 SPUs
and the program works well until 8 threads/SPUs.
Trying to run it on more than 8 SPUs, leads to "extra" processes are in 
the "-1" state initially
though a time goes by for them:

>L     0.0  -1  14.308    mono
>U     0.2  0   14.342    mono
>
How it's possible at all ?

>  
>
>>Also, in SDK 3.1 top-spu gives incorrect values in %SPU column.
>>    
>>
>
>Incorrect in what way?
>
Please, let's see that again:

> spu-top: Context View
> Cpu(s) load avg: 0.09, 0.13, 0.22
> Spu(s) load avg: 3.43, 1.60, 1.18
> Cpu(s):  0.1%us,  0.3%sys,  0.2%wait,  0.0%nice, 99.4%idle
> Spu(s): 49.9%us,  0.1%sys,  0.0%wait, 50.0%idle
>
>    PID   TID USERNAME   S F  %SPU SPE     TIME BINARY
>  24429 24443 user002        U     0.2        4   14.230    mono
>  24429 24442 user002        U     0.2        5   14.231    mono
>  24429 24441 user002        U     0.2        6   14.232    mono
>  24429 24440 user002        U     0.2        7   14.232    mono
>  24429 24439 user002        L     0.0       -1   14.305    mono
>  24429 24438 user002        L     0.0       -1   14.305    mono
>  24429 24437 user002        L     0.0       -1   14.306    mono
>  24429 24436 user002        L     0.0       -1   14.308    mono
>  24429 24435 user002        U     0.2        0   14.342    mono
>  24429 24434 user002        U     0.2        1   14.343    mono
>  24429 24433 user002        U     0.2        2   14.345    mono
>  24429 24432 user002        U     0.2        3   14.347    mono 

In fact,  real workload  is 100% for each SPU (except processes with "-1"),
and a total workload ( for 8 SPUs) is near 50 %:

> Spu(s): 49.9%us,  0.1%sys,  0.0%wait, 50.0%idle

Thanks.

Yury



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