Rui Machado wrote:
Hi Dotan
is there any limitation on the size that can be registered
(ibv_reg_mr) for communication?
I seem to be limited to 16GB (on 32GB 64bit x86 machine).
Is this normal? Can someone tell me why and/or if there is a workaround?
In the device attributes there is an attribute called max_mr_size which
indicate the maximum block size
that can be registered for a device.
I have a value of 131056 (printed as an int). How can I decode this?
I have a feeling that you refer to the value of max_mr (am i right?)
There is one more limitation which is a device specific for the translation
table virtual <-->physical
You can check the low level driver of the HW that you are using in order to
increase the size
of this table.
which HW do you use?
Mellanox
ca type:25218 (vendor_part_id)
fw_version : 5.1.400 (fw_ver)
hw_version : a0 (hw_ver)
The module parameter "num_mtt" control the size of the above described
table.
Dotan
Thank you
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