<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Hello,<div><br></div><div>Can any one comfirm or link me to documents that explain communication <span class="Apple-style-span" style="font-family: Verdana; font-size: 11px; line-height: 13px; white-space: pre; ">mechanism of MPI_Bcast and MPI_Reduce?</span></div><div><font class="Apple-style-span" face="Verdana" size="3"><span class="Apple-style-span" style="font-size: 11px; line-height: 13px; white-space: pre;"><br></span></font></div><div><font class="Apple-style-span" face="Verdana" size="3"><span class="Apple-style-span" style="font-size: 11px; line-height: 13px; white-space: pre;">I searched in google and It said Bcast,Reduce can use tree algorithm or sequential communication.</span></font></div><div><font class="Apple-style-span" face="Verdana" size="3"><span class="Apple-style-span" style="font-size: 11px; line-height: 13px; white-space:
pre;">However, I can't find any specification that indicate <span class="Apple-style-span" style="font-family: arial; font-size: 13px; line-height: normal; white-space: normal; ">communication <span class="Apple-style-span" style="font-family: Verdana; font-size: 11px; line-height: 13px; white-space: pre; ">mechanism of MPI_Bcast and MPI_Reduce in MPICH2.</span></span></span></font></div><div><font class="Apple-style-span" face="Verdana" size="3"><span class="Apple-style-span" style="font-size: 11px; line-height: 13px; white-space: pre;"><br></span></font></div><div><font class="Apple-style-span" face="Verdana" size="3"><span class="Apple-style-span" style="font-size: 11px; line-height: 13px; white-space: pre;">thx,</span></font></div><div><font class="Apple-style-span" face="Verdana" size="3"><span class="Apple-style-span" style="font-size: 11px; line-height: 13px; white-space: pre;">gra</span></font></div></td></tr></table><br>