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---------- Forwarded message ---------- From: Rui Machado <[EMAIL PROTECTED]> Date: 2008/8/11 Subject: Re: [ofa-general] limit on memory registration To: Dotan Barak <[EMAIL PROTECTED]> 2008/8/6 Dotan Barak <[EMAIL PROTECTED]>: > Rui Machado wrote: >> >> Hi all, >> >> 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. > > 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? > I am now working with another hw. Mellanox ConnectX HCA But I still have the limitation on the amount of memory to register. I would really like to understand what's going on here and why does it fail. And I also the need to fix it :-/ (case it's possible) Any help is much appreciated. Cheers _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
