Changes between Version 14 and Version 15 of R-MPI

Timestamp:

May 8, 2008, 11:50:17 AM (17 years ago)

Author:

chris

Comment:

--

R-MPI

@@ -198 +198 @@
 }}}
 
- * Here are the running times(secs) with different times of loops of origianl R:
-{{{
-10 loops : 1.087226
-20 loops : 3.395167
-30 loops : 7.027248
-40 loops : 11.95344
-50 loops : 17.02942
-60 loops : 23.54457
-70 loops : 32.23314
-80 loops : 42.41104
-90 loops : 53.88992
-100 loops : 64.43279
+ * We could find that there double loops in the sample program, one is j, and the other is p.[[BR]]
+   So we control one of the loop (either j or p) variable, and see how fast it is when the Rmpi apply in it.[[BR]]
+   In the meanwhile, we compare how much does the performance improve when the number of slaves are 3 and 6.[[BR]]
+ * The running times(secs) for variable j of sample program (p is 30) are as below:
+{{{
+j(times of loop)        single          paralle with 3 slaves   parallel with 6 slaves
+10                      7.319691        3.738059                2.707863
+50                      33.96304        11.76658                6.84227
+100                     71.7085         22.68779                11.85747
+150                     111.417         32.51246                16.98184
+200                     142.6771        42.51736                22.92909
+250                     176.2949        53.08824                27.35953
 }}}
 
- * And Here are the running times(secs) with diffrent times of loops of PARALLEL R (Rmpi):
-{{{
-10 loops : 1.759266
-20 loops : 2.582305
-30 loops : 4.262631
-40 loops : 6.176133
-50 loops : 8.695369
-60 loops : 12.00457
-70 loops : 16.19619
-80 loops : 20.33303
-90 loops : 25.45973
-100 loops : 30.71952
+ * The running times(secs) for variable p of sample program (j is 10) are as below:
+{{{
+p(times of loop)        single          paralle with 3 slaves   parallel with 6 slaves
+30                      6.462582        3.91415                 2.550209
+60                      22.9513         9.87096                 5.806265
+90                      56.07782        20.56819                11.25752
+120                     90.7383         35.26347                18.84071
+150                     154.7837        54.48117                28.72215
 }}} 
 
 * The Curve is as below:[[BR]]
  The Y-aix represents runtime of both single mode and parallel mode.(units: seconds)[[BR]]
- The X-aix represents how many times of loop set by us in the sample program (from 10 to 100) [[BR]]
-[[Image(Rmpi_example_test_result.jpg)]]
+ The X-aix represents how many times of loop set by us in the sample program [[BR]]
+ For variable j : [[BR]] 
+[[Image(for_j_loop_times.JPG)]]
+ For variable p : [[BR]]
+[[Image(for_p_loop_times.JPG)]]