Changes between Version 7 and Version 8 of UGT2011

Timestamp:

Nov 5, 2014 9:36:37 AM (10 years ago)

Author:

nakasato

Comment:

--

UGT2011

@@ -58 +58 @@
 
 
-
 = K.Nakamura =
 == Acceleration of Matrix Multiplication in Double-Double Precision by OpenCL ==
+In this research, I used the double-double (DD) precision data type for calculations.
+DD precision here is pseudo DD precision and implemented by not a hardware but
+a software as programming.
+This DD precision value uses two double precision values to stand for it.
+An operation in DD precision requires dozen double precision operations.
+So it takes much time to calculate, we need to accelerate the DD calculations.
+The purpose of my research is how fast I can accelerate matrix multiplication in DD precision.
+For the acceleration, I used the technique of General Purpose GPU (GPGPU).
+GPGPU is a method of parallel processing by using GPUs.
+But in this time I can also use multi-core CPUs for acceleration by OpenCL.
+By OpenCL, matrix multiplication was about 480 times as fast as that of non-parallel processing on GPU
+and about 28 times faster on multi-core CPU.
+And I tested LU factorization as an application of accelerated matrix multiplication.
+In the result about 12 times faster on GPU and about 9 times faster on multi-core CPU.
+
+
+file:///home/committee/aac/Thesis2011/s1160154
+
+
 
 = T.Watanabe =