[ofa-general] Re: dapl attribute bug
swise at opengridcomputing.com
Tue Apr 28 18:32:00 PDT 2009
Did this ever get fixed?
I think UNH is seeing this issue still.
Steve Wise wrote:
> Davis, Arlin R wrote:
>>> The DAPL dat_ia_attr->max_lmr_block_size is a u32, yet the dapl code
>>> maps this to the linux ib_device_attr->max_mr_size which is u64.
>>> This causes dapltest to fail in some cases when running over chelsio
>>> which sets max_mr_size to 0x100000000 (4GB). The dapl code
>>> truncates the value to 0. See dapl/openib_cma/dapl_ib_util.c.
>>> I'm not sure what the fix should be, but maybe the dapl code should
>>> set anything over 32 bits to 0xffffffff?
>> This attribute changed with DAT 2.0 to match the 32-bit ibv_sge
>> length field. Since there are no direct max lmr segments mappings
>> I will need add some checks when setting max_lmr_block_size from
>> max_mr_size. Thanks.
> I'll test your fix when its ready. Lemme know.
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