<html><head><meta http-equiv="Content-Type" content="text/html charset=big5"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">To the experienced user of DiFX,<div class=""><br class=""></div><div class="">I have re-installed the DiFX on the OS of "Scientific Linux release 6.8 (Carbon)”.</div><div class="">However, when I performed the “startdifx”, I obtained the following error messages.</div><div class="">>>></div><div class=""><div class="">--------------------------------------------------------------------------</div><div class="">Your job failed to map. Either no mapper was available, or none</div><div class="">of the available mappers was able to perform the requested</div><div class="">mapping operation. This can happen if you request a map type</div><div class="">(e.g., loadbalance) and the corresponding mapper was not built.</div><div class="">--------------------------------------------------------------------------</div></div><div class=""><br class=""></div><div class="">But when I used the mpifxcorr, I did not get any error message and I can successfully obtain the result.</div><div class="">For example, I can use the following command to replace the startdifx:</div><div class=""><font color="#ff2600" class="">mpirun --machinefile g3_7038.machines -np 11 mpifxcorr g3_7038.input</font></div><div class=""><font color="#ff2600" class=""><br class=""></font></div><div class="">So it seems the problem is not due to the connection to the mpi.</div><div class=""><br class=""></div><div class="">Does anyone know the possible origin to cause this problem? And please give an indication to solve it.</div><div class=""><br class=""></div><div class="">Thanks,</div><div class="">
<div class=""><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">--</span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">Lupin Chun-Che Lin</span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">Supporting Scientist of GLT (GreenLand Telescope) project </span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">in Institute of Astronomy and Astrophysics, Academia Sinica,</span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">14F of Astronomy-Mathematics Building (Rm: 1405), </span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">National Taiwan University. </span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan.</span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">Tel: +886-2-2366-5464</span></div><div style="font-family: 新細明體, sans-serif; font-size: 14px;" class=""><span style="font-size: 12px;" class="">Fax: +886-2-2367-7849</span></div></div><div class=""><br class=""></div><br class="Apple-interchange-newline">
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