Hi Exaos,
I use already for several years icc as my default compiler. The 30%
(that I of course also see) is very significant and it is silly not to
use this compiler for any production. You basically gain one or two
generations of hardware at no cost.
You should put this mail on the G4 forum to encourage them to port G4 to
icc (which should not be much effort, icc v8 is very compatible with gcc
3).
Cheers, Fons.
On Tue, 2004-02-03 at 16:06, Exaos Lee wrote:
> Hi, All.
> I find that root will run faster if it is compiled by Intel C/C++
> Compiler on Intel platforms. As I tested, it can run 30% faster by icc
> than by gcc on my PIV box.
> But unfortunately, I cannot compile geant4 by icc and geant4 cannot work
> with root compiled by icc.
>
>
> ______________________________________________________________________
>
> *******************************************
> * *
> * W E L C O M E to R O O T *
> * *
> * Version 4.00/01 22 January 2004 *
> * *
> * You are welcome to visit our Web site *
> * http://root.cern.ch *
> * *
> *******************************************
>
> FreeType Engine v2.1.3 used to render TrueType fonts.
> Compiled for linux with thread support.
>
> CINT/ROOT C/C++ Interpreter version 5.15.117, Jan 4 2004
> Type ? for help. Commands must be C++ statements.
> Enclose multiple statements between { }.
>
> Welcome to the ROOT tutorials
>
>
> Type ".x demos.C" to get a toolbar from which to execute the demos
>
> Type ".x demoshelp.C" to see the help window
>
>
> Processing benchmarks.C...
> hsimple : Real Time = 1.38 seconds Cpu Time = 0.79 seconds
> hsum : Real Time = 0.90 seconds Cpu Time = 0.58 seconds
>
> Object statistics
> class cnt on heap size total size heap size
> ================================================================================
> TObject 110 110 12 1320 1320
> TList 17 17 44 748 748
> THashList 2 2 48 96 96
> TObjString 321 321 20 6420 6420
> TPair 321 321 20 6420 6420
> TOrdCollection 6 6 44 264 264
> TClassTable 1 1 12 12 12
> TPluginManager 1 1 16 16 16
> TRandom 1 1 32 32 32
> THashTable 3 3 40 120 120
> TObjectTable 1 1 24 24 24
> TEnv 1 1 24 24 24
> TMap 1 0 28 28 0
> TUnixSystem 1 1 376 376 376
> TROOT 1 0 308 308 0
> --------------------------------------------------------------------------------
> Total: 788 786 1048 16208 15872
> ================================================================================
>
> fillrandom: Real Time = 0.15 seconds Cpu Time = 0.06 seconds
> TFile** fillrandom.root
> TFile* fillrandom.root
> KEY: TFormula form1;1 abs(sin(x)/x)
> KEY: TF1 sqroot;1 x*gaus(0)+[3]*form1
> KEY: TH1F h1f;1 Test random numbers
> sqroot : x*gaus(0)+[3]*form1 Ndim= 1, Npar= 4, Noper= 11
> fExpr[0] = x action = 144 action param = 0
> fExpr[1] = gaus(0) action = 110 action param = 0
> fExpr[2] = * action = 3 action param = 0
> fExpr[3] = [3] action = 140 action param = 3
> fExpr[4] = x action = 144 action param = 0
> fExpr[5] = sin action = 11 action param = 0
> fExpr[6] = x action = 144 action param = 0
> fExpr[7] = / action = 4 action param = 0
> fExpr[8] = abs action = 41 action param = 0
> fExpr[9] = * action = 3 action param = 0
> fExpr[10] = + action = 1 action param = 0
> Par 0 p0 = 10
> Par 1 p1 = 4
> Par 2 p2 = 1
> Par 3 p3 = 20
> TH1.Print Name= Func, Entries= 100, Total sum= 1514.36
> FCN=191.938 FROM MIGRAD STATUS=CONVERGED 125 CALLS 126 TOTAL
> EDM=3.04297e-07 STRATEGY= 1 ERROR MATRIX UNCERTAINTY 2.1 per cent
> EXT PARAMETER STEP FIRST
> NO. NAME VALUE ERROR SIZE DERIVATIVE
> 1 p0 3.29813e+01 5.33605e-01 -6.73622e-04 9.77958e-04
> 2 p1 3.98897e+00 1.76566e-02 -1.60737e-04 6.03749e-02
> 3 p2 1.00021e+00 1.31769e-02 5.11839e-05 3.08495e-02
> 4 p3 6.29888e+01 1.32324e+00 3.05003e-04 2.96136e-04
> fit1 : Real Time = 0.17 seconds Cpu Time = 0.08 seconds
> TFile** hsimple.root Demo ROOT file with histograms
> TFile* hsimple.root Demo ROOT file with histograms
> KEY: TH1F hpx;1 This is the px distribution
> KEY: TH2F hpxpy;1 py vs px
> KEY: TProfile hprof;1 Profile of pz versus px
> KEY: TNtuple ntuple;1 Demo ntuple
> i 0 0.000000 1.986693
> i 1 0.100000 2.955202
> i 2 0.200000 3.894183
> i 3 0.300000 4.794255
> i 4 0.400000 5.646425
> i 5 0.500000 6.442177
> i 6 0.600000 7.173561
> i 7 0.700000 7.833269
> i 8 0.800000 8.414710
> i 9 0.900000 8.912074
> i 10 1.000000 9.320391
> i 11 1.100000 9.635582
> i 12 1.200000 9.854497
> i 13 1.300000 9.974950
> i 14 1.400000 9.995736
> i 15 1.500000 9.916648
> i 16 1.600000 9.738476
> i 17 1.700000 9.463001
> i 18 1.800000 9.092974
> i 19 1.900000 8.632094
> tornado : Real Time = 0.10 seconds Cpu Time = 0.07 seconds
> na49 : Real Time = 1.49 seconds Cpu Time = 1.43 seconds
> geometry : Real Time = 0.21 seconds Cpu Time = 0.21 seconds
> na49view : Real Time = 0.13 seconds Cpu Time = 0.01 seconds
> na49view : Real Time = 0.38 seconds Cpu Time = 0.08 seconds
> FCN=20.7944 FROM MIGRAD STATUS=CONVERGED 65 CALLS 66 TOTAL
> EDM=3.90725e-14 STRATEGY= 1 ERROR MATRIX ACCURATE
> EXT PARAMETER STEP FIRST
> NO. NAME VALUE ERROR SIZE DERIVATIVE
> 1 p0 1.56416e+00 1.80510e-01 3.20780e-05 -1.93867e-05
> 2 p1 1.01361e-02 2.43967e-02 8.64192e-06 -7.37096e-05
> 3 p2 8.76773e-01 1.61451e-02 2.32044e-06 -2.69818e-04
> ntuple1 : Real Time = 0.59 seconds Cpu Time = 0.40 seconds
> ---------------ROOT 4.00/01 benchmarks summary--------------------
> hsimple : Real Time = 1.38 seconds Cpu Time = 0.79 seconds
> hsum : Real Time = 0.90 seconds Cpu Time = 0.58 seconds
> fillrandom: Real Time = 0.15 seconds Cpu Time = 0.06 seconds
> fit1 : Real Time = 0.17 seconds Cpu Time = 0.08 seconds
> tornado : Real Time = 0.10 seconds Cpu Time = 0.07 seconds
> na49 : Real Time = 1.49 seconds Cpu Time = 1.43 seconds
> geometry : Real Time = 0.21 seconds Cpu Time = 0.21 seconds
> na49view : Real Time = 0.38 seconds Cpu Time = 0.08 seconds
> ntuple1 : Real Time = 0.59 seconds Cpu Time = 0.40 seconds
> TOTAL : Real Time = 5.37 seconds Cpu Time = 3.70 seconds
>
> ---------------ROOT 4.00/01 benchmarks summary (in ROOTMARKS)-----
> For comparison, a Pentium IV 2.4Ghz is benchmarked at 600 ROOTMARKS
> hsimple = 430.43 RealMARKS, = 326.58 CpuMARKS
> hsum = 660.00 RealMARKS, = 248.28 CpuMARKS
> fillrandom = 1920.00 RealMARKS, = 400.00 CpuMARKS
> fit1 = 458.82 RealMARKS, = 225.00 CpuMARKS
> tornado = 660.00 RealMARKS, = 257.14 CpuMARKS
> na49 = 559.73 RealMARKS, = 583.22 CpuMARKS
> geometry = 542.86 RealMARKS, = 514.29 CpuMARKS
> na49view = 521.05 RealMARKS, = 375.00 CpuMARKS
> ntuple1 = 1820.34 RealMARKS, = 420.00 CpuMARKS
>
> ****************************************************
> * Your machine is estimated at 601.98 ROOTMARKS *
> ****************************************************
>
> This is the end of ROOT -- Goodbye
>
>
> ______________________________________________________________________
>
> *******************************************
> * *
> * W E L C O M E to R O O T *
> * *
> * Version 4.00/01 22 January 2004 *
> * *
> * You are welcome to visit our Web site *
> * http://root.cern.ch *
> * *
> *******************************************
>
> FreeType Engine v2.1.3 used to render TrueType fonts.
> Compiled for linux with thread support.
>
> CINT/ROOT C/C++ Interpreter version 5.15.117, Jan 4 2004
> Type ? for help. Commands must be C++ statements.
> Enclose multiple statements between { }.
>
> Welcome to the ROOT tutorials
>
>
> Type ".x demos.C" to get a toolbar from which to execute the demos
>
> Type ".x demoshelp.C" to see the help window
>
>
> Processing benchmarks.C...
> hsimple : Real Time = 1.13 seconds Cpu Time = 0.63 seconds
> hsum : Real Time = 0.78 seconds Cpu Time = 0.47 seconds
>
> Object statistics
> class cnt on heap size total size heap size
> ================================================================================
> TObject 110 110 12 1320 1320
> TList 17 17 44 748 748
> THashList 2 2 48 96 96
> TObjString 320 320 20 6400 6400
> TPair 320 320 20 6400 6400
> TOrdCollection 6 6 44 264 264
> THashTable 3 3 40 120 120
> TROOT 1 0 308 308 0
> TClassTable 1 1 12 12 12
> TObjectTable 1 1 24 24 24
> TMap 1 0 28 28 0
> TPluginManager 1 1 16 16 16
> TRandom 1 1 32 32 32
> TUnixSystem 1 1 376 376 376
> TEnv 1 1 24 24 24
> --------------------------------------------------------------------------------
> Total: 786 784 1048 16168 15832
> ================================================================================
>
> fillrandom: Real Time = 0.12 seconds Cpu Time = 0.04 seconds
> TFile** fillrandom.root
> TFile* fillrandom.root
> KEY: TFormula form1;1 abs(sin(x)/x)
> KEY: TF1 sqroot;1 x*gaus(0)+[3]*form1
> KEY: TH1F h1f;1 Test random numbers
> sqroot : x*gaus(0)+[3]*form1 Ndim= 1, Npar= 4, Noper= 11
> fExpr[0] = x action = 144 action param = 0
> fExpr[1] = gaus(0) action = 110 action param = 0
> fExpr[2] = * action = 3 action param = 0
> fExpr[3] = [3] action = 140 action param = 3
> fExpr[4] = x action = 144 action param = 0
> fExpr[5] = sin action = 11 action param = 0
> fExpr[6] = x action = 144 action param = 0
> fExpr[7] = / action = 4 action param = 0
> fExpr[8] = abs action = 41 action param = 0
> fExpr[9] = * action = 3 action param = 0
> fExpr[10] = + action = 1 action param = 0
> Par 0 p0 = 10
> Par 1 p1 = 4
> Par 2 p2 = 1
> Par 3 p3 = 20
> TH1.Print Name= Func, Entries= 100, Total sum= 1514.36
> FCN=191.938 FROM MIGRAD STATUS=CONVERGED 125 CALLS 126 TOTAL
> EDM=3.04297e-07 STRATEGY= 1 ERROR MATRIX UNCERTAINTY 2.1 per cent
> EXT PARAMETER STEP FIRST
> NO. NAME VALUE ERROR SIZE DERIVATIVE
> 1 p0 3.29813e+01 5.33605e-01 -6.73622e-04 9.77958e-04
> 2 p1 3.98897e+00 1.76566e-02 -1.60737e-04 6.03749e-02
> 3 p2 1.00021e+00 1.31769e-02 5.11839e-05 3.08495e-02
> 4 p3 6.29888e+01 1.32324e+00 3.05003e-04 2.96136e-04
> fit1 : Real Time = 0.14 seconds Cpu Time = 0.06 seconds
> TFile** hsimple.root Demo ROOT file with histograms
> TFile* hsimple.root Demo ROOT file with histograms
> KEY: TH1F hpx;1 This is the px distribution
> KEY: TH2F hpxpy;1 py vs px
> KEY: TProfile hprof;1 Profile of pz versus px
> KEY: TNtuple ntuple;1 Demo ntuple
> i 0 0.000000 1.986693
> i 1 0.100000 2.955202
> i 2 0.200000 3.894183
> i 3 0.300000 4.794255
> i 4 0.400000 5.646425
> i 5 0.500000 6.442177
> i 6 0.600000 7.173561
> i 7 0.700000 7.833269
> i 8 0.800000 8.414710
> i 9 0.900000 8.912074
> i 10 1.000000 9.320391
> i 11 1.100000 9.635582
> i 12 1.200000 9.854497
> i 13 1.300000 9.974950
> i 14 1.400000 9.995736
> i 15 1.500000 9.916648
> i 16 1.600000 9.738476
> i 17 1.700000 9.463001
> i 18 1.800000 9.092974
> i 19 1.900000 8.632094
> tornado : Real Time = 0.04 seconds Cpu Time = 0.03 seconds
> na49 : Real Time = 0.99 seconds Cpu Time = 0.99 seconds
> geometry : Real Time = 0.18 seconds Cpu Time = 0.15 seconds
> na49view : Real Time = 0.13 seconds Cpu Time = 0.02 seconds
> na49view : Real Time = 0.37 seconds Cpu Time = 0.09 seconds
> FCN=20.7944 FROM MIGRAD STATUS=CONVERGED 65 CALLS 66 TOTAL
> EDM=5.40294e-14 STRATEGY= 1 ERROR MATRIX ACCURATE
> EXT PARAMETER STEP FIRST
> NO. NAME VALUE ERROR SIZE DERIVATIVE
> 1 p0 1.56416e+00 1.80511e-01 3.20780e-05 2.30578e-05
> 2 p1 1.01361e-02 2.43968e-02 8.64192e-06 8.16881e-05
> 3 p2 8.76773e-01 1.61451e-02 2.32044e-06 3.17694e-04
> ntuple1 : Real Time = 0.46 seconds Cpu Time = 0.30 seconds
> ---------------ROOT 4.00/01 benchmarks summary--------------------
> hsimple : Real Time = 1.13 seconds Cpu Time = 0.63 seconds
> hsum : Real Time = 0.78 seconds Cpu Time = 0.47 seconds
> fillrandom: Real Time = 0.12 seconds Cpu Time = 0.04 seconds
> fit1 : Real Time = 0.14 seconds Cpu Time = 0.06 seconds
> tornado : Real Time = 0.04 seconds Cpu Time = 0.03 seconds
> na49 : Real Time = 0.99 seconds Cpu Time = 0.99 seconds
> geometry : Real Time = 0.18 seconds Cpu Time = 0.15 seconds
> na49view : Real Time = 0.37 seconds Cpu Time = 0.09 seconds
> ntuple1 : Real Time = 0.46 seconds Cpu Time = 0.30 seconds
> TOTAL : Real Time = 4.21 seconds Cpu Time = 2.76 seconds
>
> ---------------ROOT 4.00/01 benchmarks summary (in ROOTMARKS)-----
> For comparison, a Pentium IV 2.4Ghz is benchmarked at 600 ROOTMARKS
> hsimple = 525.66 RealMARKS, = 409.52 CpuMARKS
> hsum = 761.54 RealMARKS, = 306.38 CpuMARKS
> fillrandom = 2400.00 RealMARKS, = 600.00 CpuMARKS
> fit1 = 557.14 RealMARKS, = 300.00 CpuMARKS
> tornado = 1650.00 RealMARKS, = 600.00 CpuMARKS
> na49 = 842.42 RealMARKS, = 842.42 CpuMARKS
> geometry = 633.33 RealMARKS, = 720.00 CpuMARKS
> na49view = 535.14 RealMARKS, = 333.33 CpuMARKS
> ntuple1 = 2334.78 RealMARKS, = 560.00 CpuMARKS
>
> ****************************************************
> * Your machine is estimated at 783.36 ROOTMARKS *
> ****************************************************
>
> This is the end of ROOT -- Goodbye
--
Org: CERN, European Laboratory for Particle Physics.
Mail: 1211 Geneve 23, Switzerland
E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248
WWW: http://www.rademakers.org/fons/ Fax: +41 22 7679480
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