$Assumptions = data ∈ Reals;

Test 0: Import Data

SetDirectory[NotebookDirectory[]];
RepeatedTiming[data = Flatten[Import["RandomRealsExport.csv", HeaderLines->0]];]

Test 1: Data Fitting

With[{mesh=Flatten[Table[{x,y,z,Log[120.x]-Abs[((Cos[(z/300.)])/(140. y))]},{x,0.2`,10.,0.22`},{y,0.2`,10.,0.22`},{z,0.2`,10.,0.22`}],2]},
RepeatedTiming[FindFit[mesh,Log[a x]-Abs[((Cos[(z/b)])/(c y))],{{a,1.},{b,1.},{c,100.}},{x,y,z},AccuracyGoal->6];]
]

Test 2: Digits of Pi

RepeatedTiming[N[π,1000000];]

Test 3: Discrete Fourier Transform

RepeatedTiming[
Do[
Fourier[data],{11}];]

Test 4: Eigenvalues of a Matrix

Block[{a,b,m},
a=ArrayReshape[data[[;;176400]],{420,420}];
b=DiagonalMatrix[data[[176401;;176820]]];
m=a.b.Inverse[a];
RepeatedTiming[
Do[Eigenvalues[m],{6}]]]

Test 5: Elementary Functions

RepeatedTiming[
Do[
Exp[data];
Sin[data];
Tan[data],{60}]]

Test 6: Gamma Function

With[{a=10.data[[;;1000]]+160.},
RepeatedTiming[
Do[Gamma[a],{1000}]]]

Test 7: Large Integer Multiplication

With[{a=ArrayReshape[((Round[1000data])^3),{2,524288}]},
RepeatedTiming[Times@@a;]]

Test 8: Matrix Arithmetic

With[{m=ArrayReshape[data[[;;705600]],{840,840}]},
RepeatedTiming[
Do[(((1.0+0.5 m))^127),{50}];]]

Test 9: Matrix Multiplication

With[{m=ArrayReshape[data,{1024,1024}]},
RepeatedTiming[
Do[m.m,{12}]]]

Test 10: Matrix Transpose

With[{m=ArrayReshape[data,{1024,1024}]},
RepeatedTiming[
Do[Transpose[m],{80}]]]

Test 11: Numerical Integration

RepeatedTiming[NIntegrate[Sin[(x^2)+(y^2)],{x,-2.6π,2.6 π},{y,-(2.6` π),2.6` π}];]

Test 12: Polynomial Expansion

RepeatedTiming[Expand[Times@@Table[(((c+x))^3),{c,350}];]]

Test 13: Random Number Sort

With[{a=50000.data},
RepeatedTiming[
Do[Sort[a],{15}]]]

Test 14: Singular Value Decomposition

With[{m=ArrayReshape[data,{1024,1024}]},
RepeatedTiming[SingularValueDecomposition[m];]]

Test 15: Solving a Linear System

With[{
m=ArrayReshape[data,{1024,1024}],
v=data[[51814;;52837]]},
RepeatedTiming[
Do[LinearSolve[m,v],{16}]]]