<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>No strong preference, one way or another. specifying a predefined attribute still requires using a query function to access its value; furthermore, MPI does not require that attributes be constant. So I see no difference in functionality -- do I miss something?</div><div><br></div><br><div><blockquote type="cite"><div><blockquote type="cite"><blockquote type="cite"><br><font class="Apple-style-span" color="#000000"><br></font></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Thanks Marc. Should there be an additional call to<br></blockquote><blockquote type="cite">MPI_Get_num_endpoints() instead of using a predefined attribute<br></blockquote><blockquote type="cite">MPI_ENDPOINTS? This will allow implementations to decide how many end<br></blockquote><blockquote type="cite">points to create depending on how many other applications are sharing<br></blockquote><blockquote type="cite">the network resources, for example.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"> -- Pavan<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">-- <br></blockquote><blockquote type="cite">Pavan Balaji<br></blockquote><blockquote type="cite"><a href="http://www.mcs.anl.gov/~balaji">http://www.mcs.anl.gov/~balaji</a><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite"><font class="Apple-style-span" color="#144FAE"><font class="Apple-style-span" color="#006312"><br></font></font></blockquote>*******************************************<br></div></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Marc Snir</div><div>4323 Siebel Center, 201 N Goodwin, IL 61801</div><div>Tel (217) 244 6568</div><div>Web <a href="http://www.cs.uiuc.edu/homes/snir">http://www.cs.uiuc.edu/homes/snir</a></div><div><br></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"> </div><br></body></html>