chapter on one-sided communication for next meeting

Marc Snir (snir@watson.ibm.com)
Wed, 30 Aug 1995 14:59:37 -0400

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y(48)p eop
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y(3.)22 b(The)13 b(target)f(datat)o(yp)q(e)g(is)i(a)f(general)g(target)f
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189 2704 y(The)21 b(caller)i(pro)o(vides)f(a)g(handle)h(to)e(this)h(target)e
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46 y Fj(1)1967 103 y(2)1967 159 y(3)1967 215 y(4)1967 272 y(5)1967
328 y(6)1967 385 y(7)1967 441 y(8)1967 498 y(9)1959 554 y(10)1959
611 y(11)1959 667 y(12)1959 724 y(13)1959 780 y(14)1959 836
y(15)1959 893 y(16)1959 949 y(17)1959 1006 y(18)1959 1062 y(19)1959
1119 y(20)1959 1175 y(21)1959 1232 y(22)1959 1288 y(23)1959
1345 y(24)1959 1401 y(25)1959 1457 y(26)1959 1514 y(27)1959
1570 y(28)1959 1627 y(29)1959 1683 y(30)1959 1740 y(31)1959
1796 y(32)1959 1853 y(33)1959 1909 y(34)1959 1966 y(35)1959
2022 y(36)1959 2078 y(37)1959 2135 y(38)1959 2191 y(39)1959
2248 y(40)1959 2304 y(41)1959 2361 y(42)1959 2417 y(43)1959
2474 y(44)1959 2530 y(45)1959 2587 y(46)1959 2643 y(47)1959
2699 y(48)p eop
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708 y(is)f(that)f(the)g(target)f(pro)q(cess)i(kno)o(ws)e(that)h(a)g(datat)o
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764 y(is)h(created,)f(rather)g(than)g(at)g(call)i(time.)k(Th)o(us,)15
b(if)h(datat)o(yp)q(es)f(are)g(handled)i(di\013eren)o(tly)f(for)f(put/get,)75
821 y(as)g(compared)g(to)g(send/receiv)o(e,)h(the)f(system)g(migh)o(t)g(tak)o
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b(can)g(recognize)h(simple)g(datat)o(yp)q(es)f(\(basic)75 933
y(datat)o(yp)q(es,)f(simple)h(strided)g(datat)o(yp)q(es\),)f(and)g(map)g
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990 y(can)g(supp)q(ort)f(them,)h(or)f(use)g(the)h(comm)o(unication)g(copro)q
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1046 y(case,)g(one)g(will)h(need)g(to)e(transfer)g(a)h(datat)o(yp)q(e)f
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1103 y(in)o(terpreted)i(at)e(the)h(remote)f(no)q(de.)21 b(Suc)o(h)14
b(design)h(is)g(reasonably)f(easy)g(to)f(implemen)o(t)i(in)g(soft)o(w)o(are)d
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b(a)f(heterogenous)h(en)o(vironmen)o(t,)f(it)h(will)h(require)f(to)f(agree)g
(on)g(a)75 1216 y(common)e(datat)o(yp)q(e)f(represen)o(tation)h(\(not)g(a)f
(ma)s(jor)g(problem\).)20 b(Therefore,)14 b(this)g(prop)q(osal)g(seems)h(to)
75 1272 y(pro)o(vide)h(the)f(p)q(erformance)g(of)g(the)g(\014rst)g(prop)q
(osal,)g(with)h(m)o(uc)o(h)f(more)g(generalit)o(y)l(.)166 1329
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(implemen)o(ted)i(b)o(y)e(executing)h(a)e(send.)22 b(These)16
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b(The)19 b(call)g(will)h(not)e(b)q(e)75 1611 y(able)d(to)g(easily)g(iden)o
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(vide)g(the)f(func-)75 1780 y(tionalit)o(y)c(of)f(the)h(other,)f(at)g(the)h
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(datat)o(yp)q(e\).)k(I.e.,)15 b(for)g(the)h(second)g(prop)q(osal,)g(w)o(e)f
(allo)o(w)h(cac)o(hing)75 1893 y(of)i(target)f(datat)o(yp)q(e)h(handles)h(at)
f(the)h(origin)g(pro)q(cess;)h(for)d(the)i(third)g(prop)q(osal,)g(w)o(e)f
(allo)o(w)h(remote)75 1950 y(creation)c(of)g(datat)o(yp)q(es.)166
2006 y(If)10 b(w)o(e)g(pic)o(k)h(the)g(second)f(prop)q(osal)h(\(target)e
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(additional)h(call)75 2175 y(of)e(the)h(form)f Fl(MPI)p 393
2175 14 2 v 16 w(REMOTE)p 596 2175 V 17 w(TYPE)p 730 2175 V
17 w(CREA)l(TE\(ta)o(rget)p 1046 2175 V 17 w(datat)o(yp)q(e,)i(new)p
1328 2175 V 17 w(datat)o(yp)q(e\))g Fw(to)f(do)f(the)h(em)o(b)q(ed-)75
2232 y(ding.)20 b Fl(ta)o(rget)p 308 2232 V 16 w(datat)o(yp)q(e)14
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(the)f(form)g Fl(MPI-)p 75 2514 V 89 2514 a(REMOTE)p 279 2514
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498 y(9)-40 554 y(10)-40 611 y(11)-40 667 y(12)-40 724 y(13)-40
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595 663 V 15 w(request,)17 b(ta)o(rget)p 887 663 V 16 w(request\))117
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1097 y(\(in)o(teger\))117 1172 y(IN)155 b Fl(ta)o(rget)p 433
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b Fl(ta)o(rget)p 433 1473 V 17 w(request)323 b Fq(index)14
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1597 y Fs(int)47 b(MPI)p 269 1597 15 2 v 17 w(Iput\()23 b(void)h(*origin)p
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1498 1710 V 17 w(Comm)g(comm,)393 1767 y(MPI)p 468 1767 V 17
w(Request)g(*origin)p 844 1767 V 16 w(request,)g(int)g(target)p
1314 1767 V 17 w(request\))75 1853 y(MPI)p 150 1853 V 17 w(IPUT\()g(ORIGIN)p
454 1853 V 16 w(ADDR,)g(ORIGIN)p 757 1853 V 17 w(COUNT,)g(ORIGIN)p
1085 1853 V 16 w(DATATYPE,)g(TARGET,)g(TARGET)p 1675 1853 V
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868 1910 V 16 w(DATATYPE,)g(COMM,)g(ORIGIN)p 1410 1910 V 16
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1685 2278 V 16 w(datat)o(yp)q(e)p Fw(,)75 2335 y(starting)13
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(to)g(the)g(target)f(bu\013er)h(at)g(address)g Fl(windo)o(w)p
1066 2448 V 17 w(base)h(+)f(ta)o(rget)p 1333 2448 V 17 w(disp)p
Fm(\002)p Fl(extent\(ta)o(rget)p 1705 2448 V 19 w(datat)o(yp)q(e\))75
2504 y Fw(sp)q(eci\014ed)17 b(b)o(y)e(the)h(argumen)o(ts)e
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%%Page: 14 14
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2699 y(48)p eop
%%Page: 15 15
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%%Page: 17 17
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2699 y(48)p eop
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%%Page: 20 20
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1119 y(20)1959 1175 y(21)1959 1232 y(22)1959 1288 y(23)1959
1345 y(24)1959 1401 y(25)1959 1457 y(26)1959 1514 y(27)1959
1570 y(28)1959 1627 y(29)1959 1683 y(30)1959 1740 y(31)1959
1796 y(32)1959 1853 y(33)1959 1909 y(34)1959 1966 y(35)1959
2022 y(36)1959 2078 y(37)1959 2135 y(38)1959 2191 y(39)1959
2248 y(40)1959 2304 y(41)1959 2361 y(42)1959 2417 y(43)1959
2474 y(44)1959 2530 y(45)1959 2587 y(46)1959 2643 y(47)1959
2699 y(48)p eop
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249 y(to)i(the)h(\(asso)q(ciativ)o(e\))g(function)f Ff(f)t
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1514 y(27)-40 1570 y(28)-40 1627 y(29)-40 1683 y(30)-40 1740
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bop 75 -100 a Fw(22)728 b Fo(CHAPTER)15 b(4.)30 b(ONE)16 b(SIDED)f(COMMUNICA)
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2477 y(!)h(this)f(part)g(does)h(the)f(assignment)g(itself)75
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b(MPI_UNDEFINED,)22 b(ierr\))1967 46 y Fj(1)1967 103 y(2)1967
159 y(3)1967 215 y(4)1967 272 y(5)1967 328 y(6)1967 385 y(7)1967
441 y(8)1967 498 y(9)1959 554 y(10)1959 611 y(11)1959 667 y(12)1959
724 y(13)1959 780 y(14)1959 836 y(15)1959 893 y(16)1959 949
y(17)1959 1006 y(18)1959 1062 y(19)1959 1119 y(20)1959 1175
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y(33)1959 1909 y(34)1959 1966 y(35)1959 2022 y(36)1959 2078
y(37)1959 2135 y(38)1959 2191 y(39)1959 2248 y(40)1959 2304
y(41)1959 2361 y(42)1959 2417 y(43)1959 2474 y(44)1959 2530
y(45)1959 2587 y(46)1959 2643 y(47)1959 2699 y(48)p eop
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2699 y(48)p eop
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611 y(11)1959 667 y(12)1959 724 y(13)1959 780 y(14)1959 836
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1345 y(24)1959 1401 y(25)1959 1457 y(26)1959 1514 y(27)1959
1570 y(28)1959 1627 y(29)1959 1683 y(30)1959 1740 y(31)1959
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2699 y(48)p eop
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%%Page: 36 36
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2699 y(48)p eop
%%Page: 37 37
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%%Trailer
end
userdict /end-hook known{end-hook}if
%%EOF

-------------------

Marc Snir
IBM T.J. Watson Research Center
P.O. Box 218, Yorktown Heights, NY 10598
email: snir@watson.ibm.com
phone: 914-945-3204
fax: 914-945-4425

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