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<span style="margin: 0px; font-size: 12pt; font-family: "Times New Roman", Times, serif; color: black;">Dear Gate Users,</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: "Times New Roman", Times, serif; color: black;">I've come across the following issue when trying to run a simulation with CT images on a cluster using gjs job splitter: </span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: "Times New Roman", Times, serif; color: black;">As shown by the error message below, the HU range is not initialized properly, showing a [min,max] of [-1001,-1001] despite my patient-HU2mat.txt file actually
covering [-1050,3001], which I double-checked.</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;">[Core-0] Initialization of geometry</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;"><!> *** WARNING *** <!> The image contains HU indices out of range of the HU range found in data/patient-HU2mat.txt</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;">HU min, max: -1001, -1001</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;">Image min, max: -1000, 1942</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;"> </span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;">[Volume-0] ERROR: too many HU values are out of the range of the materials table:</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;">******** 0 underflows (HU<-1001) ********</span></p>
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<span style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: black;">******** 249029 overflows (HU>-1001) ********</span></p>
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<span style="margin: 0px; font-size: 12pt; color: black;"><span style="margin: 0px; font-family: "Times New Roman", Times, serif; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); display: inline !important;">The warning only occurs in a minority of
the split jobs, sometimes causing the job to end immediately, and sometimes after an hour or two of running just fine up to that point. </span></span></p>
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<span style="margin: 0px; font-size: 12pt; color: black;"><span style="margin: 0px; font-family: "Times New Roman", Times, serif; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); display: inline !important;">Strangely enough, the warning tends to
disappear when the affected jobs are re-run. However, I would appreciate if anyone has any advice to prevent this from happening in the first place. </span></span></p>
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<span style="margin:0px;font-family:"Times New Roman", Times, serif">Thank you,</span></p>
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<span style="margin:0px;font-family:"Times New Roman", Times, serif">Eric</span></p>
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