Data Structure Example -- Spice

• Assigning circuit elements from a linked list to processors

• Critical section to take next element off list

• Circuit structure and variables are shared

• Synchronize update of circuit current

subroutine diode(ii,loc1)

common /blank/ value(1000000)

equivalence (vdo(1),value(1)),(cdo(1),value(2))

c$omp critical

loc = loc1

loc1 = nodplc(loc)

c$omp end critical

node2=nodplc(loc+3)

node3=nodplc(loc+4)

call pnjlim(vdtemp,-(vdo(lx0+loct)+bv))

vd=-(vdtemp+bv)

call intgr8(geq,ceq,capd,loct+3)

cdeq= cqd(lx0+loct) -geq*vd

c$omp critical

value(lvn+node2)=value(lvn+node2)+cdeq

value(lvn+node3)=value(lvn+node3)-cdeq

c$omp end critical

end

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