<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Jean-Michel, <div class=""><br class=""></div><div class="">Thanks for the suggestions. I incorporated them both. </div><div class="">Here is the STDOUT output (attached file as well). </div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) PTRACERS_READPARMS: finished reading data.ptracers</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) RBCS_READPARMS: opening data.rbcs</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) OPEN_COPY_DATA_FILE: opening file data.rbcs</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) // =======================================================</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) // Parameter file "data.rbcs"</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) // =======================================================</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > &RBCS_PARM01</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > rbcsForcingPeriod=0.,</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > useRBCptracers=.TRUE.,</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > relaxMaskFile(3)='tracer_mask.bin',</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > relaxMaskFile(4)='tracer_mask.bin',</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > &</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > &RBCS_PARM02</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > useRBCptrnum(1)=.TRUE.,</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > tauRelaxPTR(1)=1000.,</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > relaxPtracerFile(1)='tracer_relax.bin',</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > useRBCptrnum(2)=.TRUE.,</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > tauRelaxPTR(2)=1000.,</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > relaxPtracerFile(2)='tracer_relax.bin',</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">(PID.TID 0000.0001) > &</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures; background-color: #00e6e6" class="">(</span><span style="font-variant-ligatures: no-common-ligatures" class="">PID.TID 0000.0001</span><span style="font-variant-ligatures: no-common-ligatures; background-color: #00e6e6" class="">)</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(254, 244, 156);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">"STDOUT.0000" 304L, 16658C 304,1 Bot</span></div></div><div class=""><br class=""></div><div class="">I have the simulation running with one tracer. Am I supposed to define some extra flags when I use more than one tracer? </div><div class="">There is no error in STDERR.0000 </div><div class=""><br class=""></div><div class="">Thanks,</div><div class="">Dhruv</div><div class=""><br class=""></div><div class=""></div></body></html>