search for: nneed

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2015 Jan 18
2
default min-v/nsize parameters
..., R_VShrinkIncrFrac = 0.2; 347 static int R_VGrowIncrMin = 80000, R_VShrinkIncrMin = 0; 348#endif static void AdjustHeapSize(R_size_t size_needed) { R_size_t R_MinNFree = (R_size_t)(orig_R_NSize * R_MinFreeFrac); R_size_t R_MinVFree = (R_size_t)(orig_R_VSize * R_MinFreeFrac); R_size_t NNeeded = R_NodesInUse + R_MinNFree; R_size_t VNeeded = R_SmallVallocSize + R_LargeVallocSize + size_needed + R_MinVFree; double node_occup = ((double) NNeeded) / R_NSize; double vect_occup = ((double) VNeeded) / R_VSize; if (node_occup > R_NGrowFrac) { R_size_t change = (R_si...
2015 Jan 20
1
default min-v/nsize parameters
...rMin = 0; >> 348#endif >> >> static void AdjustHeapSize(R_size_t size_needed) >> { >> R_size_t R_MinNFree = (R_size_t)(orig_R_NSize * R_MinFreeFrac); >> R_size_t R_MinVFree = (R_size_t)(orig_R_VSize * R_MinFreeFrac); >> R_size_t NNeeded = R_NodesInUse + R_MinNFree; >> R_size_t VNeeded = R_SmallVallocSize + R_LargeVallocSize + >> size_needed + R_MinVFree; >> double node_occup = ((double) NNeeded) / R_NSize; >> double vect_occup = ((double) VNeeded) / R_VSize; >> >> if (...
2015 Jan 19
0
default min-v/nsize parameters
...atic int R_VGrowIncrMin = 80000, R_VShrinkIncrMin = 0; > 348#endif > > static void AdjustHeapSize(R_size_t size_needed) > { > R_size_t R_MinNFree = (R_size_t)(orig_R_NSize * R_MinFreeFrac); > R_size_t R_MinVFree = (R_size_t)(orig_R_VSize * R_MinFreeFrac); > R_size_t NNeeded = R_NodesInUse + R_MinNFree; > R_size_t VNeeded = R_SmallVallocSize + R_LargeVallocSize + > size_needed + R_MinVFree; > double node_occup = ((double) NNeeded) / R_NSize; > double vect_occup = ((double) VNeeded) / R_VSize; > > if (node_occup > R_NGrowFrac) { &g...
2015 Jan 15
2
default min-v/nsize parameters
Just wanted to start a discussion on whether R could ship with more appropriate GC parameters. Right now, loading the recommended package Matrix leads to: > library(Matrix) > gc() used (Mb) gc trigger (Mb) max used (Mb) Ncells 1076796 57.6 1368491 73.1 1198505 64.1 Vcells 1671329 12.8 2685683 20.5 1932418 14.8 Results may vary, but here R needed 64MB of N cells and 15MB
2006 Mar 08
12
best way to combine results from two tables
...combine a selection of data from two tables and display it as list. Note that this isn''t a join. i''m looking for something like this: Table 1: Sheep Name, Age, Farmer, etc. (sheep specific columns) Table 2: Cows: Name, Age, Farmer, etc. (cow specific columns) For my display I nneed something like this: Farmer Jone''s Livestock: TYPE NAME AGE Cow Bessie 2 Sheep Fred 6 What''s the best way to do this in rails? I considered creating a view in the db and doing it there, as well as doing selects from both tables and combining the r...