GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > GRBP_DB / V0-3-1
Constituent: grbp_dbprint Tag: rad750
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Data Structures | |
| struct | _GRBP_DB_clusterList |
| Configuration of the list holding the input clusters. More... | |
Typedefs | |
| typedef _GRBP_DB_clusterList | GRBP_DB_clusterList |
| Typedef for struct _GRBP_clusterList. | |
CVS $Id: GRBP_DB_clusterList.h,v 1.1.1.1 2007/06/17 23:23:59 russell Exp $
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Typedef for struct _GRBP_clusterList. The clustering code is arranged such all windows, independent of their clustering depth, sponge off the same basic structure. Given that, in normal operation, there is only one sensible value to set this to and that is the maximum window depth. However it is provided as a separate parameter for testing purposes. In contrast to the photon list count, the value of this parameter greatly impacts both the number of CPU cycles expended and the amount of memory consumed. For each new photon received, the client (e.g. the SIU) must update count clusters. If, for example, photons are being received at 200Hz and the clustering depth is set to 100, then 100 clusters must be updated at 200Hz. The memory requirements go like this number squared times a number like 64 bytes. Thus setting this value to 100 consumes ~64*100*100 = 640Kbytes. |
1.4.4