Report #1 Example. Semester
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1 Report # Eample Parallel FEM Class n Wnter Semester Kengo aajma Informaton Technology Center Techncal & Scentfc Comptng I (480-07) Semnar on Compter Scence I (480-04)
2 Report-0 D Statc Lnear Elastc Problem F =0 ( mn ) = ma Only deforms n -drecton (dsplacement: ) Sectonal Area A=A + A (>0) Unform Yong s Modls E Bondary Condtons (B.C.) =0 : =0 (fed) = ma : F (aal force) Trss: O bendng deformaton by G-force
3 Report-0 D Statc Lnear Elastc Problem A=A + A (>0) F =0 ( mn ) = ma Only deforms n -drecton (dsplacement: ) Sectonal Area A=A + A (>0) Unform Yong s Modls E Bondary Condtons (B.C.) =0 : =0 (fed) = ma : F (aal force) Trss: O bendng deformaton by G-force
4 Report-0 4 D Statc Lnear Elastc Problem A=A + A (>0) F =0 ( mn ) = ma Eqlbrm Eqaton 0 Stran~ Dsplacement Stress~ Stran E E 0 Governng Eqaton for
5 Report-0 5 Procedres for Comptaton solve eqatons for dsplacement E 0 calc. stran calc. stress E
6 Report-0 6 Analytcal Solton E F A E d d F A A F A log A A C C A 0@ 0 E F A log F EA log A A log A
7 Report-0 7 Report # Implement qadratc nterpolaton on b.c/b.f. ame of the developed code s b.c/b.f Evalate accracy of b and b accordng to effect of nmber of meshes. Confrm the followng eqaton s correct, f sectonal area s constant: V E d T d d d dv De on Agst 9 th (M), 0 at 7:00 Docments Report (Otlne, Reslts, Dscssons) (less than 5 pages) Lst of Sorce Code EA 6L
8 Report-0 8 Report #: Tps () Dervatve of Shape Fnctons =+ =- =0 d d d d d d m A J w E Emat ] [ Vales at Gassan Qad Ponts ( )
9 Report-0 9 Report #: Tps () Jacoban Jacoban at Gassan Qad Ponts ( ) =+ =- =0
10 Report-0 0 Strategy Unform Sect. Area, Lnear Elem. (Analytcal Integraton ) <$fem>/d/d.c Unform Sect. Area, Hgher-Order Elem. <$fem>/d/d.c on-nform Sect. Area, Lnear Elem. (Analytcal ) <$fem>/darea/a.c on-nform Sect. Area, Isoparametrc Lnear Elem. (mercal Integraton ) <$fem>/darea/b.c on-nform Sect. Area, Isoparametrc Hgher- Order Elem. (mercal Integraton ) Startng from d.c s easy.
11 Report-0 Gassan Qadratre On normalzed natral (or local) coordnate system [-,+] Can appromate p to (m-)-th order of fnctons by m qadratre ponts (m= s enogh for qadratc shape fnctons). m f m m m d w f 0.00, , 0.00, w w ,.00 8/ w w / 9 =- =0 = = =+
12 Report-0 Gassan Qadratre can be easly etended to D & D W j W, ), ( j m,n: nmber of qadratre ponts n -drecton : Weghtng Factor : Coordnates of Qad s n j j j m f W W d d f I ), ( ), (
13 Report-0 How to se Gassan Qadratre Coordnate transformaton from [0,L] (or [, ]) to [-,+] s needed. Shape/Interpolaton fnctons mst be handled on natral/local coordnate system. = =0 = =L =- =+ Local node ID s (,, ) are defned as sbscrpts of,, and etc.
14 Report-0 4 Pecewse Lnear Element =- =+,,
15 Report-0 5 nd -order/qadratc Element =+ =- =0,,,,,
16 Report-0 6 Isoparametrc Element Defntons of Isoparametrc Elements n Each element s defned on natral/local coordnate for [-,+] And the components of global coordnate system of each node (e.g.,y,z) for certan nds of elements are defned by shape fnctons [] on natral/local coordnate system, where shape fnctons [] are also sed for nterpolaton of dependent varables. ( ), : n,... n ( )
17 Report-0 7 Integraton over Each Element: [] Ad E dv E T V T V
18 Report-0 8 Partal Dfferentaton on atral/local Coordnate System (/) Accordng to formlae: ( ) can be easly derved accordng to defntons. are reqred for comptatons. s Jacoban (=J) n n J
19 Report-0 9 Partal Dfferentaton on atral/local Coordnate System (/) Target terms are derved as follows: J ) ( ) ( d d J d d J f d f L 0 Integraton on natral/local coordnate system:
20 Report-0 0 Integraton over Each Element: [] (/) m T T T T V T T V A J w E d A J E d J A J J E d J A E d A E dv E
21 Report-0 Integraton over Each Element: [] (/) m m m T A J w E A J w E A J w E, / /
22 Report-0 Eample (/7): Var s/array s #nclde <stdo.h> #nclde <stdlb.h> #nclde <math.h> #nclde <assert.h> nt man(){ nt E,, PLU, IterMa, errno, PLU0; nt R, Z, Q, P, DD, p; doble d, Resd, Eps, Area, F, Yong, Jacob; doble,,, U, U, U, DL, Stran, Sgma, C,, 0, A, A, DISP; doble *U, *Rhs, *; doble *Dag, *AMat; doble **W; nt *Inde, *Item, *Icelnod; doble POI[], WEI[], ddq[], Emat[][]; nt, j, n, n, n,, cel,,,,,,, js; nt ter; FILE *fp; doble Borm, Rho, Rho=0.0, C, Alpha, Dorm; nt err = ;
23 Report-0 Eample (/7) Intalzaton, Array Allocaton /* // // IIT. // */ fp = fopen("npt.dat", "r"); assert(fp!= ULL); fscanf(fp, "%d", &E); fscanf(fp, "%lf %lf %lf %lf %lf", &d, &F, &A, &A, &Yong); fscanf(fp, "%d", &IterMa); fscanf(fp, "%lf", &Eps); fclose(fp); = *E + ; PLU0= * + E* + (E-)*4; U = calloc(, szeof(doble)); = calloc(, szeof(doble)); Dag = calloc(, szeof(doble)); AMat = calloc(plu0, szeof(doble)); Rhs = calloc(, szeof(doble)); Inde= calloc(+, szeof(nt)); Item = calloc(plu0, szeof(nt)); Icelnod= calloc(*e, szeof(nt));
24 Report-0 44 Inpt Data npt.dat E (mber of Elements) e e6,F, A, A, E 00 mber of MA. Iteratons for CG Solver.e-8 Convergence Crtera for CG Solver 0 00 A A A A..5 = 4 5 Element ID ode ID (Global) =0 =5 =50 =75 =00
25 Report-0 5 Eample (/7) Intalzaton, Array Allocaton /* // // IIT. // */ fp = fopen("npt.dat", "r"); assert(fp!= ULL); fscanf(fp, "%d", &E); fscanf(fp, "%lf %lf %lf %lf %lf", &d, &F, &A, &A, &Yong); fscanf(fp, "%d", &IterMa); fscanf(fp, "%lf", &Eps); fclose(fp); = *E + ; PLU0= * + E* + (E-)*4; U = calloc(, szeof(doble)); = calloc(, szeof(doble)); Dag = calloc(, szeof(doble)); AMat = calloc(plu0, szeof(doble)); Rhs = calloc(, szeof(doble)); Inde= calloc(+, szeof(nt)); Item = calloc(plu0, szeof(nt)); Icelnod= calloc(*e, szeof(nt)); Amat: on-zero Off-Dag. Comp. Item: Correspondng Colmn ID
26 D-Part 6 on-zero Off-Dagonal Components odes are connected to node on each element each other ( ) K + ( ) F f 4 +
27 D-Part 7 mber of on-zero Off-Dagonals Dfferent nmber of connectons accordng to locaton of each node 4 for ormal odes for Intermedate odes for Bondary odes
28 D-Part 8 mber of on-zero Off-Dagonals Dfferent nmber of connectons accordng to locaton of each node 4 for ormal odes for Intermedate odes for Bondary odes Bondary ode# Intermedate ode# E ormal ode# E+-= E- ecept Bondary odes Total ode#: = +E+E-= *E + on-zero Off-Dag.#: PLU= * + *E + 4*(E-)
29 Report-0 9 Eample (/7) Intalzaton, Array Allocaton (cont.) W = (doble **)malloc(szeof(doble *)*4); f(w == ULL) { fprntf(stderr, "Error: %s n", strerror(errno)); retrn -; } for(=0; <4; ++) { W[] = (doble *)malloc(szeof(doble)*); f(w[] == ULL) { fprntf(stderr, "Error: %s n", strerror(errno)); retrn -; } } for(=0;<;++) U[] = 0.0; for(=0;<;++) Dag[] = 0.0; for(=0;<;++) Rhs[] = 0.0; for(=0;<plu0;++) AMat[] = 0.0; for(=0;<;++) []= *d*0.5; for(cel=0;cel<e;cel++){ Icelnod[*cel ]= *cel; Icelnod[*cel+]= *cel+; Icelnod[*cel+]= *cel+; } : -coordnate component of each node WEI[0]= +.0; WEI[]= +.0; POI[0]= ; POI[]= ;
30 Report-0 0 Eample (/7) Intalzaton, Array Allocaton (cont.) W = (doble **)malloc(szeof(doble *)*4); f(w == ULL) { fprntf(stderr, "Error: %s n", strerror(errno)); retrn -; } for(=0; <4; ++) { W[] = (doble *)malloc(szeof(doble)*); f(w[] == ULL) { fprntf(stderr, "Error: %s n", strerror(errno)); retrn -; } } for(=0;<;++) U[] = 0.0; for(=0;<;++) Dag[] = 0.0; for(=0;<;++) Rhs[] = 0.0; for(=0;<plu0;++) AMat[] = 0.0; for(=0;<;++) []= *d*0.5; for(cel=0;cel<e;cel++){ Icelnod[*cel ]= *cel; Icelnod[*cel+]= *cel+; Icelnod[*cel+]= *cel+; } WEI[0]= +.0; WEI[]= +.0; POI[0]= ; POI[]= ; Icelnod[*cel] =*cel cel Icelnod[*cel+] =*cel+ Icelnod[*cel+] =*cel+
31 Report-0 Eample (4/7) Global Matr: Colmn ID for on-zero Off-Dag s /* // // COECTIVITY // */ Inde[0]= 0; for(=;<;++) { f (%==) {Inde[]=4; }else {Inde[]=;}} Inde[]= ; Inde[]= ; for(=0;<;++){ Inde[+]= Inde[+] + Inde[];} PLU= Inde[]; for(=0;<;++){ nt js = Inde[]; f( == 0){ Item[jS ] = +; Item[jS+] = +; }else f( == -){ Item[jS ] = -; Item[jS+] = -; }else{ f (%==){ Item[jS ] = -; Item[jS+] = +; } else { Item[jS ] = -; Item[jS+] = -; Item[jS+] = +; Item[jS+] = +;}}} 4 for ormal odes for Intermedate odes for Bondary odes
32 Report-0 Eample (4/7) Global Matr: Colmn ID for on-zero Off-Dag s /* // // COECTIVITY // */ Inde[0]= 0; for(=;<;++) { f (%==) {Inde[]=4; }else {Inde[]=;}} Inde[]= ; Inde[]= ; for(=0;<;++){ Inde[+]= Inde[+] + Inde[];} PLU= Inde[]; for(=0;<;++){ nt js = Inde[]; f( == 0){ Item[jS ] = +; Item[jS+] = +; 両端の }else f( == -){ 節点 : つ Item[jS ] = -; Item[jS+] = -; }else{ f (%==){ Item[jS ] = -; Item[jS+] = +; } else { Item[jS ] = -; Item[jS+] = -; Item[jS+] = +; Item[jS+] = +;}}} Item(jS) Item(jS+) Item(jS) Item(jS+)
33 Report-0 Eample (4/7) Global Matr: Colmn ID for on-zero Off-Dag s /* // // COECTIVITY // */ Inde[0]= 0; for(=;<;++) { f (%==) {Inde[]=4; }else {Inde[]=;}} Inde[]= ; Inde[]= ; for(=0;<;++){ Inde[+]= Inde[+] + Inde[];} PLU= Inde[]; for(=0;<;++){ nt js = Inde[]; f( == 0){ Item[jS ] = +; Item[jS+] = +; }else f( == -){ Item[jS ] = -; Item[jS+] = -; }else{ f (%==){ Item[jS ] = -; 中間節点 Item[jS+] = +; : つ } else { Item[jS ] = -; Item[jS+] = -; Item[jS+] = +; Item[jS+] = +;}}} Item(jS) Item(jS+)
34 Report-0 4 Eample (4/7) Global Matr: Colmn ID for on-zero Off-Dag s /* // // COECTIVITY // */ Inde[0]= 0; for(=;<;++) { f (%==) {Inde[]=4; }else {Inde[]=;}} Inde[]= ; Inde[]= ; for(=0;<;++){ Inde[+]= Inde[+] + Inde[];} PLU= Inde[]; for(=0;<;++){ nt js = Inde[]; f( == 0){ Item[jS ] = +; Item[jS+] = +; }else f( == -){ Item[jS ] = -; Item[jS+] = -; }else{ f (%==){ Item[jS ] = -; Item[jS+] = +; } else { Item[jS ] = -; Item[jS+] = -; 要素両端 Item[jS+] = +; の節点 :4 つ Item[jS+] = +;}}} Item(jS+) Item(jS+) Item(jS) Item(jS+)
35 Report-0 5 Eample (5/7): Matr (/) /* // // MATRI assemble // */ for(cel=0;cel<e;cel++){ n= Icelnod[*cel]; n= Icelnod[*cel+]; n= Icelnod[*cel+]; = [n]; = [n]; = [n]; n cel n n DL = fabs(-); 0 = 0.5 * (+); Emat[0][0]= 0.0; Emat[0][]= 0.0; Emat[0][]= 0.0; Emat[][0]= 0.0; Emat[][]= 0.0; Emat[][]= 0.0; Emat[][0]= 0.0; Emat[][]= 0.0; Emat[][]= 0.0;
36 Report-0 6 Eample (6/7): Matr (/) for(p=0;p<;p++){ ddq[0]= POI[p]; ddq[]= -.0 * POI[p]; ddq[]= POI[p]; = 0 + POI[p]*0.50*DL; Area= A* + A; f(area<= 0.) { fprntf(stderr, "ERROR: Area<0: n"); retrn -; } } Jacob= fabs(ddq[0]* + ddq[]* + ddq[]*); C= Area*Yong/Jacob; Emat[0][0]= Emat[0][0] + C * WEI[p] * ddq[0] * ddq[0]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[];
37 Report-0 7 Dervatves at Gassan Qad. Ponts Dervatve of Shape Fnctons =+ =- =0 d d d d d d m A J w E Emat ] [ Vales at Gassan Qad Ponts ( )
38 Report-0 8 Eample (6/7): Matr (/) for(p=0;p<;p++){ ddq[0]= POI[p]; ddq[]= -.0 * POI[p]; ddq[]= POI[p]; L = 0 + POI[p]*0.50*DL; Area= A* + A; L/ } f(area<= 0.) { fprntf(stderr, "ERROR: Area<0: n"); retrn -; } =- =0 Jacob= fabs(ddq[0]* + ddq[]* + ddq[]*); C= Area*Yong/Jacob; Emat[0][0]= Emat[0][0] + C * WEI[p] * ddq[0] * ddq[0]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; =+ : Global Coordnate for Gassan Qad. Pont Area: Sectonal Area at
39 D-Part 9 -Coord. or Gassan Qad. Ponts nd -Order/Qadratc Element Accordng to defntons of soparametrc elements: =+ =- =0 L L/ = 0 + POI[p]*0.50*DL;
40 Report-0 40 Eample (6/7): Matr (/) for(p=0;p<;p++){ ddq[0]= POI[p]; ddq[]= -.0 * POI[p]; ddq[]= POI[p]; } = 0 + POI[p]*0.50*DL; Area= A* + A; f(area<= 0.) { fprntf(stderr, "ERROR: Area<0: n"); retrn -; } Jacob Jacob= fabs(ddq[0]* + ddq[]* + ddq[]*); C= Area*Yong/Jacob; Emat[0][0]= Emat[0][0] + C * WEI[p] * ddq[0] * ddq[0]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[];
41 Report-0 4 Jacoban at Gassan Qad. Ponts Jacoban Jacoban at Gassan Qad Ponts ( ) =+ =- =0
42 Report-0 4 Eample (6/7): Matr (/) for(p=0;p<;p++){ ddq[0]= POI[p]; ddq[]= -.0 * POI[p]; ddq[]= POI[p]; = 0 + POI[p]*0.50*DL; Area= A* + A; f(area<= 0.) { fprntf(stderr, "ERROR: Area<0: n"); retrn -; } Jacob= fabs(ddq[0]* + ddq[]* + ddq[]*); C= Area*Yong/Jacob; Emat[0][0]= Emat[0][0] + C * WEI[p] * ddq[0] * ddq[0]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[0][]= Emat[0][] + C * WEI[p] * ddq[0] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][0]= Emat[][0] + C * WEI[p] * ddq[] * ddq[0]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; Emat[][]= Emat[][] + C * WEI[p] * ddq[] * ddq[]; } m A J w E Emat ] [
43 Report-0 4 Eample (7/7): Matr (/) Same procedres n d.c Dag[n]= Dag[n] + Emat[0][0]; Dag[n]= Dag[n] + Emat[][]; Dag[n]= Dag[n] + Emat[][]; f (cel==0){=inde[n]; =Inde[n]+; }else {=Inde[n]+; =Inde[n]+;} =Inde[n]; =Inde[n]+; =Inde[n]; =Inde[n]+; n cel n n } AMat[]= AMat[] + Emat[0][]; AMat[]= AMat[] + Emat[0][]; AMat[]= AMat[] + Emat[][0]; AMat[]= AMat[] + Emat[][]; AMat[]= AMat[] + Emat[][0]; AMat[]= AMat[] + Emat[][]; st row: corresponds to n nd row: corresponds to n rd row: corresponds to n
44 Report-0 44 Eample (7/7): Matr (/) Same procedres n d.c Dag[n]= Dag[n] + Emat[0][0]; Dag[n]= Dag[n] + Emat[][]; Dag[n]= Dag[n] + Emat[][]; f (cel==0){=inde[n]; =Inde[n]+; }else {=Inde[n]+; =Inde[n]+;} =Inde[n]; =Inde[n]+; =Inde[n]; =Inde[n]+; n cel n n } AMat[]= AMat[] + Emat[0][]; AMat[]= AMat[] + Emat[0][]; AMat[]= AMat[] + Emat[][0]; AMat[]= AMat[] + Emat[][]; AMat[]= AMat[] + Emat[][0]; AMat[]= AMat[] + Emat[][]; st row: corresponds to n nd row: corresponds to n rd row: corresponds to n
45 Report-0 45 Wnter Semester: Parallel FEM Techncal & Scentfc Comptng II Semnar on Compter Scence II Contents Parallel Programmng sng MPI Data Strctre for Parallel FEM Implementaton of Parallel FEM Eercses sng Fjts PRIMEHPC F0 (Oaleaf-F) Parallelze femd code for D statc lnear-elastc problems n ths semester.
46 Report-0 Techncal & Scentfc Comptng I, II (Fnte Element Method) Instrctor: Kengo aajma Gradate Level Semester & Credts I : Smmer, -Credts II: Wnter, -Credts Overvew (I): Fndamental sses of fnte-element method (FEM) on statc lnear-elastc problems, ncldng lnear eqaton solvers and programmng. (II): Data strctre for parallel FEM, mplementaton of parallel FEM, framewor for development of parallel codes, sch as HPC-MW and ppopen-hpc wth Fjts PRIMEHPC F0 (Oaleaf-F) Strong collaboratons between scence & engneerng, compter scence and nmercal algorthms are reqred towards sccess of largescale scentfc smlatons sng parallel compters. Goal of these classes s that stdents of gradate school of nformaton scence and technologes nderstand reqrement of applcatons and try to develop new nterdscplnary research area. Grade based on reports Smmer (I). Fndamental Theory s for FEM, Statc Lnear-Elastc Problem. FEM by Galern Method. Sparse Lnear Solvers, Precondtoners 4. FEM Programmng D, D 5. ECCS 0 System of ITC Wnter (II). Parallel Programmng sng MPI. Data Strctre for Parallel FEM. Implementaton of Parallel FEM 4. Framewor for Development of Parallel Smlaton Codes sng Large-scale Systems 5. Fjts PRIMEHPC F0 (Oaleaf- F) 46
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