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我知道dgemv是矩阵向量,但哪个更有效?dgemm直接用于矩阵乘法或使用矩阵dgemvA 与矩阵 B 的每一列相乘来进行矩阵乘法dgemv?
dgemv
dgemm
如果您重复调用 DGEMV,您将无法从缓存平铺和重用中受益,这是良好 DGEMM 实现所具有的最大优势。DGEMM比多次调用DGEMV 的效率要高得多。