Hello, I'm writing a netmod and I have a trouble with receiving a messages directly to the user buffer: The relevant code looks like the following: Assuming we have a request with the one iov entry /*************** if (!VC_CH(vc)->recv_active) { /* handle a new message using MPID_nem_handle_pkt() */ } else { MPIU_Memcpy(iov->MPID_IOV_BUF, &recv_buff->buff[0], bytes_recvd); iov->MPID_IOV_BUF = (void *)((char *)iov->MPID_IOV_BUF + bytes_recvd); iov->MPID_IOV_LEN -= bytes_recvd; } if (iov->MPID_IOV_LEN) { /* receive directly to the iov->MPID_IOV_BUF next time*/ goto fn_exit; } /* handle a recv request */ } ********************/ The problem that I'm running an IMB program compiled with CHECK option and it claims about corrupted buffer. Is this is a right way to handle packet chunks which will be saved in the user buffer pointer provided in the rreq? Thanks!