Re: [OMPI devel] Improve OB1 performance when multiple NICs are available

[George Bosilca]

On Jun 27, 2007, at 10:06 AM, Gleb Natapov wrote:

Btw, did you compare my patch with yours on your multi-NIC system ?
With my patch on our system with 3 networks (2*1Gbs and one 100 Mbs)
I'm close to 99% of the total bandwidth. I'll try to see what I get
with yours.

Your patch SEGV on my setup. So can check and compare. I see this in
your patch:
+     reg = recvreq->req_rdma[bml_btl->btl_index].btl_reg;

but for IB it should be valid.

But bml_btl->btl_index is not an index in req_rdma array and actually we never initialize bml_btl->btl_index at all, so may be it would be a good idea to remove this field at all. TCP never use reg so no problem there,

  Thanks,
    george.

My patch is so old I don't remember. I was quite sure that in the beginning I copy and paste from the other function, the one that don't take the BTL as an argument. If you replace in the faulty line bml_btl->btl_index by recvreq->req_rdma_idx that should work again.

smime.p7s
Description: S/MIME cryptographic signature