<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div><div><div dir="auto">Hi Yanfei, </div></div></div><div><div dir="auto">I ask this question months ago,but I was told IPv6 is supported in mpich 3.*. So it's not supported?</div><div dir="auto"><br></div><div dir="auto">Thanks</div><div dir="auto">Shuwei</div><br><div class="gmail_quote" dir="auto"><div>On Wed, 6 Dec 2017 at 11:24 Guo, Yanfei <<a href="mailto:yguo@anl.gov" target="_blank">yguo@anl.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Carlos,<br>
<br>
MPICH currently uses gethostbyname which does not support IPv6, therefore it won’t work on a pure IPv6 network.<br>
<br>
Best,<br>
<br>
Yanfei Guo<br>
Assistant Computer Scientist<br>
MCS Division, ANL<br>
<br>
<br>
<br>
On 11/22/17, 2:23 PM, "Carlos" <<a href="mailto:carlos@inf.ufpr.br" target="_blank">carlos@inf.ufpr.br</a>> wrote:<br>
<br>
Is it possible to use mpich (3.3) with IPv6-only? We tried it here and got<br>
<br>
Fatal error in MPI_Init: Other MPI error, error stack:<br>
MPIR_Init_thread(506)..............:<br>
MPID_Init(211).....................: channel initialization failed<br>
MPIDI_CH3_Init(89).................:<br>
MPID_nem_init(324).................:<br>
MPID_nem_tcp_init(178).............:<br>
MPID_nem_tcp_get_business_card(425):<br>
ckpt_restart(384)..................: gethostbyname failed, zuratkul (errno 4)<br>
*************<br>
<br>
This shows that mpich doesn't run without IPv4, which is our case... Is there a<br>
way to make it work in this situation?<br>
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