NAME

       smc_run - start a TCP socket program with the capability to use SMC as networking protocol

SYNOPSIS

       smc_run [-dhrtv][-r SIZE] [-t SIZE] program parameters

DESCRIPTION

       smc_run  starts  a  program specified as argument with its parameters, allowing to use the
       SMC protocol for program-used TCP socket connections.
       The script specifies libsmc-preload.so as a preload shared library for the  Linux  program
       loader, and may adjust transmit and receive buffer sizes to SIZE by setting socket options
       SO_RCVBUF and SO_SNDBUF respectively.  SIZE can be specified  in  Bytes  or  using  metric
       prefixes k and m, e.g.  8k...1024k/1m.
       The  preload  library libsmc-preload.so intercepts a few TCP socket calls and triggers the
       equivalent execution through SMC.
       Note: If it is not possibile to use smc_run, the libsmc-preload.so  may  be  installed  as
       apreload  library via environment variable LD_PRELOAD. Use environment varibles SMC_SNDBUF
       and SMC_RCVBUF to  request  specific  transmit  and  receive  buffer  sizes  respectively.
       Supports metric prefixes k and m.

       The following options can be specified:

       -d     Display additional diagnostic messages during the program execution.

       -h     Display a brief usage information.

       -r SIZE
              Request receive buffer size SIZE.
              Notes:

              • May be overridden by the application.

              • Increases net.core.rmem_max if necessary.

       -t SIZE
              Request transmit buffer size SIZE.
              Notes:

              • May be overridden by the application.

              • Increases net.core.wmem_max if necessary.

       -v     Display version information.

RETURN CODES

       On success, the smc_run command returns 0.  If an error occurs smc_run writes a message to
       stdout and completes with a return code other than 0.

       1      An invalid option was specified.

EXAMPLES

       Run program foo using SMC, requesting a receive buffer size of 512KB

           $ smc_run -r 512k ./foo

SEE ALSO

       af_smc(7), smc_chk(8) smc_pnet(8), smc_rnics(8), smcd(8), smcr(8), smcss(8), tcp(7)