[Pvfs2-developers] Request problem

[Rob Ross]

Hi Antonio,

Are you using a simple code? Can we see it? What result are you getting?

Thanks,

Rob

Antonio Strano wrote:
> Rob,
> 
> the waited for result is not that one.
> 
> 
> this is code that I have tried :
> 
> PVFS_request_hvector(2, 2*N, 3*N, PVFS_BYTE, &file_req);
> PVFS_request_contiguous(4*N, PVFS_BYTE,&mem_req);
> 
> you help me?
> 
> thanks
> 
> 
> 
> On 3/29/06, Rob Ross <rross at mcs.anl.gov> wrote:
>> hi antonio,
>>
>> you want something like this i think:
>>
>>   PVFS_request_hvector(2, 2*N, 3*N, PVFS_BYTE, &blk);
>>
>> count = 2
>> block length (how many contiguous elements in a block) = 2 * size
>> stride (skip from one start to next) = 3 * size
>>
>> also, you should upgrade if possible.
>>
>> regards,
>>
>> rob
>>
>> Sam Lang wrote:
>>> Antonio,
>>>
>>> Can you send the complete program listing that you're having trouble
>>> with?  Also, the exact errors you get that cause the trouble you're
>>> having would be helpful.
>>>
>>> -sam
>>>
>>> On Mar 28, 2006, at 7:52 AM, Antonio Strano wrote:
>>>
>>>> Hi,
>>>> I am using PVFS2(V . 1.2.0) on a small cluster.
>>>>
>>>> I have of the problems with PVFS_Request_xxx.
>>>>
>>>> I have PVFS2 file(3 I/O server) with following layout:
>>>>
>>>>     a    b    g
>>>>     c    d    m
>>>>
>>>> I would want to carry out one reading obtaining :
>>>>
>>>>     a    b    c    d
>>>>
>>>> but I have of the problems !!!
>>>>
>>>> this is code that I have tried :
>>>>
>>>> N = size("a");
>>>> PVFS_Request_contiguous(2*N, PVFS_BYTE, &blk);
>>>> PVFS_Request_hvector(2, 1, N, blk, &mem_req);
>>>> PVFS_Request_contiguous(6*N, PVFS_BYTE, &file_req);
>>>>
>>>> or
>>>>
>>>> PVFS_Request_contiguous(2*N, PVFS_BYTE, &blk);
>>>> PVFS_Request_hvector(2, 1, N, blk, &mem_req);
>>>> PVFS_Request_hvector(2, 2, N, blk, &file_req);
>>>>
>>>> or
>>>>
>>>> PVFS_Request_contiguous(2*N, PVFS_BYTE, &blk);
>>>> PVFS_Request_contiguous(2,blk, &mem_req);
>>>> PVFS_Request_hvector(2, 2, N, blk, &file_req);
>>>>
>>>>
>>>> you help me?
>>>>
>>>>
>>>> Antonio
>>>>
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>>>>
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>