Aos interessados em fazer algum benchmarking, aqui uma sugestao: 1) Instale o pacote SuppDists 2) Execute: source('http://r.research.att.com/benchmarks/R-benchmark-25.R') 3) Reporte aqui: a) Informacao de Hardware b) Versao do R c) Informacoes adicionais relevantes (BLAS / LAPACK / etc) d) Resultados do benchmark... Para o meu caso: Mac Pro 4,1 Quad-Core Xeon 2.93GHz x 2 HT 16G RAM R 2.13.2 (binario padrao) + ATLAS BLAS Resultados: R Benchmark 2.5 =============== Number of times each test is run__________________________: 3 I. Matrix calculation --------------------- Creation, transp., deformation of a 2500x2500 matrix (sec): 0.617666666666613 2400x2400 normal distributed random matrix ^1000____ (sec): 0.267000000000053 Sorting of 7,000,000 random values__________________ (sec): 0.821333333333352 2800x2800 cross-product matrix (b = a' * a)_________ (sec): 0.37166666666667 Linear regr. over a 3000x3000 matrix (c = a \ b')___ (sec): 0.316000000000031 -------------------------------------------- Trimmed geom. mean (2 extremes eliminated): 0.417059757745061 II. Matrix functions -------------------- FFT over 2,400,000 random values____________________ (sec): 0.489666666666684 Eigenvalues of a 640x640 random matrix______________ (sec): 0.65166666666668 Determinant of a 2500x2500 random matrix____________ (sec): 0.430999999999964 Cholesky decomposition of a 3000x3000 matrix________ (sec): 0.331666666666706 Inverse of a 1600x1600 random matrix________________ (sec): 0.471333333333329 -------------------------------------------- Trimmed geom. mean (2 extremes eliminated): 0.463342341088548 III. Programmation ------------------ 3,500,000 Fibonacci numbers calculation (vector calc)(sec): 0.721333333333367 Creation of a 3000x3000 Hilbert matrix (matrix calc) (sec): 0.472333333333268 Grand common divisors of 400,000 pairs (recursion)__ (sec): 2.30133333333337 Creation of a 500x500 Toeplitz matrix (loops)_______ (sec): 0.733999999999999 Escoufier's method on a 45x45 matrix (mixed)________ (sec): 0.533999999999992 -------------------------------------------- Trimmed geom. mean (2 extremes eliminated): 0.656333300289129 Total time for all 15 tests_________________________ (sec): 9.53200000000008 Overall mean (sum of I, II and III trimmed means/3)_ (sec): 0.502429238538774 --- End of test ---